Huoltovalon nollaus VDO mittaristo
http://www.matthewsvolvosite.com/2008/12/reset-service-light-volvo-850-s70-v70-c70-xc70/Volvo 850 1994 - 1995 Yazaki mittaristo
Huoltovalon resetointi tapahtuu mittaristosta painamalla nappia. Nappi sijaitsee mittariston keskikohdan vasemmalla puolella.
Vikakoodien luku 
Toimivaa ohjetta etsitää, voisiko joku linkittää jos sellaisen tietää?  Eli 850 vilkkukoodien lukuohjeVikakoodien luenta
Vikakoodien luku diagnostiikkapistokkeista: 
Virta-avain II-asentoon. A-kanteen kiinnitetty johdon pätkä työnnetään pistokkeeseen, josta halutaan lukea koodit (Esim 1 tai 2:s pistoke)
 Sitten lyhyt painallus napista ja ensimmäinen koodi tulostuu ledin vilkuntana. Jos antaa 1-1-1, kaikki on ok ja voidaan siirtyä seuraavaan pistokkeeseen.
Jos antaa jonkun muun koodin, painetaan uudellen napista ja näin jatketaan kunnes ensimmäinen koodi toistuu samaisessa pistokkeessa. Nyt voidaan nollata jo luetun pistokkeen koodit. Painetaan nappi pohjaan noin kuudeksi sekunniksi ja  vapautetaan nappi ja odotetaan kunnes ledi syttyy palamaan. Kun ledi syttyy painetaan nappi uudestaan pohjaan kuudeksi sekunniksi. Tämän jälkeen taas höllätään painamasta ja odotellaan hetki,sitten lyhyellä painalluksella  pitäisi antaa koodin 1-1-1.
Tämän jälkeen voidaan luea seuraava pistoke (esim 3 tai 7).
Toimii vain -95 saakka.
Vikakoodilista 
http://www.matthewsvolvosite.com/volvo-repair-database/volvo-850-trouble-codes/On Board DTC (850)    Generic OBD Code
A-1 Transmision                   
111          No faults found          
112          Solenoid S1 short circuit to battery voltage          
113          Transmission control module (TCM) fault          
114          Program selector open circuit or short circuit to supply          
121          Solenoid S1 short circuit to ground or control module fault          
122          Solenoid S1 open circuit          
123       [something]    Solenoid STH short circuit to battery voltage    viewtopic.php?t=16229       
            viewtopic.php?p=63292       
124          Mode selector faulty or short circuit to ground          
131          Solenoid STH open/short circuit or control module fault          
132          Transmission control module(TCM) fault          
134          Faulty load signal from ignition control module          
141          Oil temperature sensor short circuit to ground          
142          Oil temperature sensor open circuit          
143          Kickdown switch faulty or short to ground          
211          Transmission control module (TCM) fault          
212          S2 solenoid short circuit to battery          
213          Throttle position (TPS) signal too high          
221          S2 solenoid short circuit to ground or control module fault          
222          S2 solenoid open circuit          
223          Throttle position (TPS) sensor signal too low          
231          Throttle position (TPS) sensor sporadic          
232          Speedometer signal missing          
233    P0500       Incorrect speedometer signal    viewtopic.php?f=1&t=17383       
235          High Oil temperature          
245          Open or short in Torque limiting circuit          
311          RPM signal from transmission missing          
312          RPM signal from transmission faulty          
313          Faulty signal from gear position sensor (PNP)          
321          Shift time too long          
322          Incorrect gear ratio          
323          Lock up slips or is not engaged          
331          Short circuit to battery in SL circuit          
332          SL solenoid open or control module fault          
333          SL solenoid short or control module fault                            
A2 – Fuel System                   
111          No faults detected          
112          Fault in ECM          
115    P0201       Injector 1          
121    P0102 (low), P0103 (high)       MAF sensor signal          
123    P0117 (low), PO118 (high)       ECT signal          
125    P0202       Injector 2          
131          RPM sensor signal missing          
132          Battery voltage          
135    P0203       Injector 3          
143    P0326       Front knock sensor signal          
145    P0204       Injector 4          
153    P0136 (faulty), P0137(low), P0138 (high)       Rear HO2S signal          
154    P0402       EGR system leakage          
155    P0205       Injector 5          
212    P0130 (missing/faulty), P0131 (low), P0132 (high), P0133
(slow)       Front HO2S signal          
214    P0336       RPM sensor signal sporadic          
223    P1505 (low), P1506 (high)       IAC valve opening signal          
225          A/C pressure sensor signal          
231    P0171 (part load), P0172 (part load)       Long term fuel trim, part load          
232    P0171 (lower limit)       Long term fuel trim, idling          
233    P0172 (part load & upper limit)       Long term idle air trim          
241    P0400       EGR system flow malfunction          
245    P1507 (low), P1508 (high)       IAC valve closing signal          
311          VSS signal          
314          CMP sensor signal          
315    P0440       EVAP system          
325          Memory failure          
335    P1617, P1618       Request for MIL lighting from TCM          
411    P0122 (low), P0123 (high)       TP sensor signal          
413    P1416 (Faulty), P1417 (Low), P1418 (High)       EGR temp sensor signal          
414          Boost pressure reduction from TCM          
416          Temperature warning level 1          
432    P0331       Rear knock sensor signal          
433    P0331       Front HO2S slow response          
435    P0133 (slow),       Front HO2S slow response          
436          Rear HO2S compensation          
443    P0422       Three way cat. Efficiency          
444    P1307 (low), P1308 (high)       Acceleration signal          
451    P0301       Misfire cylinder 1          
452    P0302       Misfire cylinder 2          
453    P0303       Misfire cylinder 3          
454    P0304       Misfire cylinder 4          
455    P0305       Misfire cylinder 5          
513    P1405       Temperature warning level 2          
514          Engine cooling fan low speed signal          
521    P0135 (low/high)       Front HO2S Preheating          
522    P0141 (low/high)       Rear HO2S Preheating          
531    P1101       Power stage group A          
532    P1102       Power stage group B          
533          Power stage group C          
534          Power stage group D          
535          TC control valve signal          
541    P0444 (low), P0445 (high)       EVAP valve signal          
542    P0300       Misfire more than one cylinder          
543    P1310       Misfire at least one cylinder          
544    P0300       Misfire more than one cylinder, three way cat damage          
545    P1310       Misfire at least one cylinder, three way cat damage          
551    P0301       Misfire cylinder 1, three way cat damage          
552    P0302       Misfire cylinder 2, three way cat damage          
553    P0303       Misfire cylinder 3, three way cat damage          
554    P0304       Misfire cylinder 4, three way cat damage          
555    P0305       Misfire cylinder 5, three way cat damage                            
A3 – ABS                   
111          No DTC set          
121          Left front wheel sensor, faulty signal <40 km/h          
122          Right front wheel sensor, faulty signal <40 km/h          
123          Left rear wheel sensor, faulty signal <40 km/h          
124          Right rear wheel sensor, faulty signal <40 km/h          
125          Signal faulty from at least one wheel sensor for a long period          
135          Control Module faulty          
141          Faulty pedal sensor, shorted to ground or supply          
142          Faulty brake pedal switch, open or short          
143          Control module faulty          
144          Brake discs overheated          
151          Left front wheel sensor, open/short to battery          
152          Right front wheel sensor, open/short to battery          
155          Rear axle sensor open/short to battery          
211          Left front wheel sensor, not signal on moving off          
212          Right front wheel sensor, no signal on moving off          
213          Left rear wheel sensor, no signal on moving off          
214          Right rear wheel sensor, no signal on moving off          
215          Valve relay, open/short          
221          Left front wheel sensor, ABS operation signal missing          
222          Right front wheel sensor, ABS operation signal missing          
223          Left rear wheel sensor, ABS operation signal missing          
224          Right rear wheel sensor, ABS operation signal missing          
231          Left front wheel sensor, signal missing          
232          Right front wheel sensor, signal missing          
235          Rear axle sensor, signal missing          
311          Left front wheel sensor, open/short          
312          Right front wheel sensor. open/short          
313          Left rear wheel sensor, open/short          
314          Right rear wheel sensor, open/short          
321          Left front wheel sensor, irregular >40 km/h          
322          Right front wheel sensor, irregular >40 km/h          
323          Left rear wheel sensor, irregular >40 km/h          
324          Left rear wheel sensor, irregular >40 km/h          
411          Right rear wheel sensor, irregular >40 km/h          
412          Left front wheel inlet valve, open/short          
413          Left front wheel return valve, open/short          
414          Right front wheel inlet valve, open/short          
415          Rear valve open/short          
421          Right front wheel return valve, open/short          
422          Rear wheel return valve circuit, open/short          
423          Traction control system valve, open/short          
424          Pressure switch for TRACS, faulty or short circuit          
441          Control module faulty          
442          Pump pressure low          
443          Pump motor, electrical or mechanical fault          
444          No power supply to valves in hydraulic unit                            
A6 – Ignition                   
111          No DTC set          
112          Control Module fault          
123          Engine Coolant Temperature Sensor (ECT) from Control module missing or faulty          
131          Engine speed (RPM) sensor signal missing          
142          Control Module Fault          
143          Knock sensor (KS) missing or faulty          
144          Ignition control module load signal missing          
154          EGR system flow too high in system          
214          Engine speed (RPM) sensor signal missing sporadically          
224          Engine Coolant Temperature sensor (ECT) signal missing or faulty          
234          Throttle Position (TPS) signal missing at idle          
241          EGR system flow too low in system          
243          Throttle Position sensor (TPS) signal missing at idle          
311          Vehicle speed signal missing or faulty          
314          Camshaft Position sensor (CMP) signal missing or faulty          
324          Camshaft Position sensor (CMP) signal missing sporadically          
411          Throttle position sensor (TPS) signal from fuel injection system missing or faulty          
413          EGR temperature sensor signal faulty          
432          Control module box temperature too high level 1          
433          Knock sensor (KS) signal missing or faulty          
513          Control module box temperature too high, level 2                            
A7 – Combined Instrument (Trip Computer)                
112          Fuel gauge short circuit          
113          Fuel gauge open circuit          
121          Temp. sensor interval too short          
122          Temp. sensor interval too long          
123          Digital output 48 pulse short circuit to supply          
131          Digital output 12 pulse short circuit to supply          
132          No RPM sensor signal          
133          Tank signal to trip computer short to supply                            
B1 Electronic climate control                
111          No fault          
121          Outside temperature sensor shorted to ground          
122          Outside temperature sensor open circuit or shorted to 12 volts          
123          Driver’s side interior temperature sensor shorted to ground          
124          Driver’s side interior temperature sensor open circuit or shorted to 12 volts          
125          Passenger’s side interior temperature sensor shorted to ground(earth)          
126          Passenger’s side interior temperature sensor open circuit or shorted to 12 volts          
131          Driver’s side air duct temperature sensor shorted to ground(earth)          
132          Driver’s side air duct temperature sensor open circuit or shorted to 12 volts          
133          Passenger’s side air duct temperature sensor shorted to ground(earth)          
134          Passenger’s side air duct temperature sensor open circuit or shorted to 12 volts          
135          No signal from engine coolant temperature sensor          
141          Faulty signal from driver’s side temperature selector switch          
143          Faulty signal from passenger’s side temperature selector switch          
145          Faulty signal from function selector switch          
151          Signal from fan speed sensor missing or too high          
152          Signal from fan speed sensor shorted to earth          
211          Driver’s side damper motor position sensor open circuit or shorted to 12 volts          
212          Driver’s side damper motor position sensor shorted to earth          
221          Passenger’s side damper motor position sensor open circuit or shorted to 12 volts          
222          Passenger’s side damper motor position sensor shorted to earth          
231          Ventilation damper motor position sensor open circuit or shorted to 12 volts          
232          Ventilation damper motor position sensor shorted to earth          
233          Floor/defrost damper motor position sensor open circuit or shorted to 12 volts          
234          Floor/defrost damper motor position sensor shorted to earth          
235          Recirculation damper motor position sensor open circuit or shorted to 12 volts          
236          Recirculation damper motor position sensor shorted to earth          
311          Driver’s side damper motor shorted to earth or shorted to 12 volts          
312          Passenger’s side damper motor shorted to earth or shorted to 12 volts          
313          Ventilation damper motor shorted to earth or shorted to 12 volts          
314          Floor/defrost damper motor shorted to earth or shorted to 12 volts          
315          Recirculation damper motor shorted to earth or shorted to 12 volts          
321          Driver’s side damper motor active too long          
322          Passenger’s side damper motor active too long          
323          Ventilation damper motor active too long          
324          Floor/defrost damper motor active too long          
325          Recirculation damper motor active too long          
411          Blower fan seized or drawing excessive current          
412          Driver’s side interior temperature sensor inlet fan shorted to earth          
413          No control voltage at driver’s side interior temperature sensor inlet fan          
414          Driver’s side interior temperature sensor inlet fan seized          
415          Passenger’s side interior temperature sensor inlet fan shorted to earth          
416          No control voltage at passenger’s side interior temperature sensor inlet fan          
417          Passenger’s side interior temperature inlet fan seized          
418          No control signal to blower fan power stage          
419          Faulty diagnostic signal from blower fan power stage          
420          ECU fault in program memory          
511          Damper motor limit position self-adjustment not carried out                            
B2 – Cruise Control                   
111          No faults detected          
112          Abnormal speed signal          
122          Speed has not exceeded 22mph or no speed signal 
211          Control module malfunction          
212          Malfunction in the circuit to the vacuum pump or regulator                            
B5 –SRS                   
111          No fault detected          
112          Sensor module fault          
127          SRS lamp open/short circuit          
211          Drivers airbag short circuit          
212          Drivers airbag open circuit          
213          Drivers airbag short circuit to ground          
214          Drivers airbag short circuit to supply          
221          Passenger airbag short circuit          
222          Passenger airbag open circuit          
223          Passenger airbag short circuit to ground          
224          Passenger airbag short circuit to supply          
231          Left belt tensioner short circuit          
232          Left belt tensioner open circuit          
233          Left belt tensioner short circuit to ground          
234          Left belt tensioner short circuit to supply          
241          Right belt tensioner short circuit          
242          Right belt tensioner open circuit          
243          Right belt tensioner short circuit to ground          
244          Right belt tensioner short circuit to supply                            
Fenix 5.2 System (only on some 850’s)                
111          No faults detected          
112          ECU fault          
113          Short term fuel mixture too weak          
115          Faulty signal to no 1 cylinder injector          
121          MAP sensor signal absent or faulty          
122          Intake air temp sensor signal absent or faulty          
123          Coolant temp signal absent or faulty          
125          Faulty signal to no 2 cylinder Injector          
132          Battery voltage too low or too high          
135          Faulty signal to no 3 cylinder Injector          
143          Front knock sensor signal absent or faulty          
144          Load signal absent or faulty          
145          Faulty signal to no 4 cylinder Injector          
152          Air pump signal absent or faulty          
154          EGR system leakage          
155          Faulty signal to no 5 cylinder Injector          
212          Heated oxygen sensor signal absent or faulty          
214          RPM sensor signal absent          
221          Long term fuel mixture too weak in part load stage          
222          Main relay signal absent or faulty          
223          Idle air control valve signal absent or faulty          
225          A/C pressure sensor signal absent or faulty          
231          Long term fuel mixture too rich in part load stage          
232          Long term fuel mixture too weak at idle          
233          Long term idle air trim outside control range          
235          EGR controller signal absent or faulty          
241          EGR system flow fault          
243          Throttle position sensor signal outside voltage range          
244          knock control at limit          
311          Vehicle speed sensor signal absent(speedometer)          
313          Evap valve signal absent or faulty          
314          Camshaft position sensor signal absent or faulty          
323          Malfunction indicator lamp signal faulty          
325          Ecu memory loss          
335          Request for malfunction indicator lamp from automatic transmission ECU          
342          Air conditioning system relay control signal faulty          
343          Fuel pump relay control signal faulty          
411          Throttle postion sensor signal outside voltage range          
413          EGR temp sensor signal absent or faulty          
432          High temp in ECU module box          
433          Rear knock sensor signal absent or faulty          
435          Heated oxygen sensor slow response          
442          Air pump relay signal absent or faulty          
511          Long term fuel mixture too rich at idlel          
512          Short term fuel mixture too rich          
513          Excessively high temperature in ECU module box          
514          Engine cooling fan faulty at half speed          
515          Engine cooling fan faulty at full speed          
521          Oxygen sensor heating faulty          
523          Signal to ECU module box cooling fan shorted to 12 volts          
524          Transmission torque control signal faulty          
535          Turbo regulator valve fault                            
Motronic 4.3 (Only on some 850’s)                
112          ECU fault          
115          Faulty signal to no 1 cylinder injector          
121          MAF sensor signal absent or faulty          
123          Coolant temp signal absent or faulty          
125          Faulty signal to no 2 cylinder Injector          
131          Engine speed (RPM) sensor signal absent or faulty          
132          Battery voltage too low or too high          
135          Faulty signal to no 3 cylinder Injector          
143          Front knock sensor signal absent or faulty          
144          Load signal absent or faulty          
145          Faulty signal to no 4 cylinder Injector          
152          Air pump signal absent or faulty          
154          EGR system leakage          
155          Faulty signal to no 5 cylinder Injector          
212          Heated oxygen sensor signal absent or faulty          
214          RPM sensor signal absent          
223          Idle air control valve siganal absent or faulty          
225          A/C pressure sensor signal absent or faulty          
231          Long term fuel mixture too rich in part load stage          
232          Long term fuel mixture too weak at idle          
233          Long term idle air trim outside control range          
235          EGR controller signal absent or faulty          
241          EGR system flow fault          
243          Throttle position sensor signal outside voltage range          
244          Knock control at limit          
245          Idle air control valve closing signal absent or faulty          
311          Vehicle speed sensor signal absent(speedometer)          
313          Evap valve signal absent or faulty          
314          Camshaft position sensor signal absent or faulty          
315          Evap system fault          
323          Malfunction indicator lamp signal faulty          
325          Ecu memory loss          
335          Request for malfunction indicator lamp from automatic transmission ECU          
342          Air conditioning system relay control signal faulty          
343          Fuel pump relay control signal faulty          
411          Throttle postion sensor signal outside voltage range          
413          EGR temp sensor signal absent or faulty          
414          Turbo boost pressure too high          
416          Turbo boost pressure reducsed by automatic transmission ECU          
432          High temp in ECU module box          
433          Rear knock sensor signal absent or faulty          
435          Heated oxygen sensor slow response          
442          Air pump relay signal absent or faulty          
511          Long term fuel mixture too rich at idle          
512          Short term fuel mixture too rich          
513          Excessively high temperature in ECU module box          
514          Engine cooling fan faulty at half speed          
515          Engine cooling fan faulty at full speed          
521          Oxygen sensor heating faulty          
523          Signal to ECU module box cooling fan shorted to 12 volts          
524          Transmission torgue control signal faulty          
535          Turbo regulator valve fault          
541          Evap fault                            
Jetronic LH3.2 (Only certain early 850’s)                
111          No faults detected          
112          ECU fault          
113          Short term fuel mixture too weak          
121          MAF sensor signal absent or faulty          
123          Coolant temp signal absent or faulty          
132          Battery voltage too low or too high          
212          Heated oxygen sensor signal absent or faulty          
221          Long term fuel mixture too weak in part load stage          
223          Idle air control valve signal absent or faulty          
231          Long term fuel mixture too rich in part load stage          
232          Long term fuel mixture too weak at idle          
311          Vehicle speed sensor signal absent(speedometer)          
411          Throttle postion sensor signal absent          
511          Long term fuel mixture too rich at idle          
512          Short term fuel mixture too rich