OBDII and Diagnostic Codes: 1992-1995 Volvos

How to Read & Clear Diagnostic Codes — OBDII — 1992-1995 Volvos

We in the 850 family who have 1996 and 1997 model years have it easy. Check Engine light comes on? We just plug in our code readers and a magical system called OBD-II tells us what code(s) are causing the CE light. Same with 1998 model year Volvos, like S70, V70 and XC70 models. Then after that, codes expanded from the OBD-II to include Volvo-specific codes that OBD-II readers cannot retrieve, although many overlap in meaning.

Read Codes on a 1999+ Volvo?

Guess what? OBD-II readers will read the OBD-II codes these cars set. The OBD-II port is physically the same. I used my reader on my ex’s 2004 V70R — lower driver’s side interior, near your left knee — and it correctly reported OBD-II codes. Here is the specific 1999+ Volvo DTC code page for “the rest of the story”.

Need a simple code reader? We suggest this Innova or this MaxiScan

How to Read Codes

To start, the Ignition key must be in position II, engine not running. Open the hood. Locate the two diagnostic sockets just inboard of the washer fill cap. The “A” connector (shown above) has a jumper that is stored in the lid of the “A” diagnostic connector. The jumper is used for both diagnostic connectors.

What Codes You Can Get

Listed below is the information retrievable from the various connections.

  • A1 Transmission
  • B1 Climate Control
  • A2 Fuel System
  • B2 Cruise Control
  • A3 ABS
  • B5 SRS
  • A5 TCU (Transmission Control)
  • B6 Power Seat
  • A6 Ignition System
  • A7 Combined Instrument

How to Use the Jumpers

Normally “Check Engine Light” information will be found in A2. Put the jumper into A2 and push the black button for one second. Count the red LED light as it blinks back information, blink, blink, pause, blink, blink, blink, pause, blink, blink, is an example of the response you would receive. 2-3-2 would be the code retrieved, now push the button again for one second, again count the blinks, keep checking for codes until one of them repeats, this means you have read all the codes.

Clearing Codes on your 850

Now to clear the codes, push and hold the button for 6-7 seconds, release and as soon as the LED comes on push and hold the button for another 6-7 seconds. Now push the button for one second and read the codes again, you should get 1-1-1 (no faults).

You Must Read All Codes before Clearing

Turn the ignition off and then start the car, the check engine light should be out. It is always a good idea to check for codes, clear them and then drive the vehicle to see if they return before replacing parts. The transmission can ask the check engine light to be turned on, so if you try clearing A2 codes and they wont go away try reading the transmission (A1), clear them , and then go back to A2.

On Board DTC CodeGeneric OBD Code Meaning
A1 — Transmission
111No faults found
112Solenoid S1 short circuit to battery voltage
113Transmission control module (TCM) fault
114Program selector open circuit or short circuit to supply
121Solenoid S1 short circuit to ground or control module fault
122Solenoid S1 open circuit
123Solenoid STH short circuit to battery voltage
124Mode selector faulty or short circuit to ground
131Solenoid STH open/short circuit or control module fault
132Transmission control module(TCM) fault
134Faulty load signal from ignition control module
141Oil temperature sensor short circuit to ground
142Oil temperature sensor open circuit
143Kickdown switch faulty or short to ground
211Transmission control module (TCM) fault
212S2 solenoid short circuit to battery
213Throttle position (TPS) signal too high
221S2 solenoid short circuit to ground or control module fault
222S2 solenoid open circuit
223Throttle position (TPS) sensor signal too low
231Throttle position (TPS) sensor sporadic
232Speedometer signal missing
233Incorrect speedometer signal
235High Oil temperature
245Open or short in Torque limiting circuit
311RPM signal from transmission missing
312RPM signal from transmission faulty
313Faulty signal from gear position sensor (PNP)
321Shift time too long
322Incorrect gear ratio
323Lock up slips or is not engaged
331Short circuit to battery in SL circuit
332SL solenoid open or control module fault
333SL solenoid short or control module fault
A2 — Fuel System
111No faults detected
112Fault in ECM
115Injector 1
121MAF sensor signal
123ECT signal
125Injector 2
131RPM sensor signal missing
132Battery voltage
135Injector 3
143Front knock sensor signal
145Injector 4
153Rear HO2S signal
154EGR system leakage
155Injector 5
212Front HO2S signal
214RPM sensor signal sporadic
223IAC valve opening signal
225A/C pressure sensor signal
231Long term fuel trim, part load
232Long term fuel trim, idling
233Long term idle air trim
241EGR system flow malfunction
245IAC valve closing signal
311VSS signal
314CMP sensor signal
315EVAP system
325Memory failure
335Request for MIL lighting from TCM
411TP sensor signal
413EGR temp sensor signal
414Boost pressure regulation
416Boost pressure reduction from TCM
432Temperature warning level 1
433Rear knock sensor signal
435Front HO2S slow response
436Rear HO2S compensation
443Three way cat. Efficiency
444Acceleration signal
451Misfire cylinder 1
452Misfire cylinder 2
453Misfire cylinder 3
454Misfire cylinder 4
455Misfire cylinder 5
513Temperature warning level 2
514Engine cooling fan low speed signal
521Front HO2S Preheating
522Rear HO2S Preheating
531Power stage group A
532Power stage group B
533Power stage group C
534Power stage group D
535TC control valve signal
541EVAP valve signal
542Misfire more than one cylinder
543Misfire at least one cylinder
544Misfire more than one cylinder, three way cat damage
545Misfire at least one cylinder, three way cat damage
551Misfire cylinder 1, three way cat damage
552Misfire cylinder 2, three way cat damage
553Misfire cylinder 3, three way cat damage
554Misfire cylinder 4, three way cat damage
555Misfire cylinder 5, three way cat damage
A3 — ABS
111No DTC set
121Left front wheel sensor, faulty signal 122 Right front wheel sensor, faulty signal 123 Left rear wheel sensor, faulty signal 124 Right rear wheel sensor, faulty signal 40 km/h
322Right front wheel sensor, irregular >40 km/h
323Left rear wheel sensor, irregular >40 km/h
324Right rear wheel sensor, irregular >40 km/h
411Left front wheel inlet valve, open/short
412Left front wheel return valve, open/short
413Right front wheel inlet valve, open/short
414Right front wheel return valve, open/short
415Rear valve open/short
421Rear wheel inlet valve circuit, open/short
422Rear wheel return valve circuit, open/short
423Traction control system valve, open/short
424Pressure switch for TRACS, faulty or short circuit
441Control module faulty
442Pump pressure low
443Pump motor, electrical or mechanical fault
444No power supply to valves in hydraulic unit
A6 — Ignition
111No DTC set
112Control Module fault
123Engine Coolant Temperature Sensor (ECT) from Control module missing or faulty
131Engine speed (RPM) sensor signal missing
142Control Module Fault
143Knock sensor (KS) missing or faulty
144Ignition control module load signal missing
154EGR system flow too high in system
214Engine speed (RPM) sensor signal missing sporadically
224Engine Coolant Temperature sensor (ECT) signal missing or faulty
234Throttle Position (TPS) signal missing at idle
241EGR system flow too low in system
243Throttle Position sensor (TPS) signal missing at idle
311Vehicle speed signal missing or faulty
314Camshaft Position sensor (CMP) signal missing or faulty
324Camshaft Position sensor (CMP) signal missing sporadically
411Throttle position sensor (TPS) signal from fuel injection system missing or faulty
413EGR temperature sensor signal faulty
432Control module box temperature too high level 1
433Knock sensor (KS) signal missing or faulty
513Control module box temperature too high, level 2
A7 — Combined Instrument (Trip Computer)
112Fuel gauge short circuit
113Fuel gauge open circuit
121Temp. sensor interval too short
122Temp. sensor interval too long
123Digital output 48 pulse short circuit to supply
131Digital output 12 pulse short circuit to supply
132No RPM sensor signal
133Tank signal to trip computer short to supply
B1 — Electronic climate control
111No fault
121Outside temperature sensor shorted to ground
122Outside temperature sensor open circuit or shorted to 12 volts
123Driver’s side interior temperature sensor shorted to ground
124Driver’s side interior temperature sensor open circuit or shorted to 12 volts
125Passenger’s side interior temperature sensor shorted to ground(earth)
126Passenger’s side interior temperature sensor open circuit or shorted to 12 volts
131Driver’s side air duct temperature sensor shorted to ground(earth)
132Driver’s side air duct temperature sensor open circuit or shorted to 12 volts
133Passenger’s side air duct temperature sensor shorted to ground(earth)
134Passenger’s side air duct temperature sensor open circuit or shorted to 12 volts
135No signal from engine coolant temperature sensor
141Faulty signal from driver’s side temperature selector switch
143Faulty signal from passenger’s side temperature selector switch
145Faulty signal from function selector switch
151Signal from fan speed sensor missing or too high
152Signal from fan speed sensor shorted to earth
211Driver’s side damper motor position sensor open circuit or shorted to 12 volts
212Driver’s side damper motor position sensor shorted to earth
221Passenger’s side damper motor position sensor open circuit or shorted to 12 volts
222Passenger’s side damper motor position sensor shorted to earth
231Ventilation damper motor position sensor open circuit or shorted to 12 volts
232Ventilation damper motor position sensor shorted to earth
233Floor/defrost damper motor position sensor open circuit or shorted to 12 volts
234Floor/defrost damper motor position sensor shorted to earth
235Recirculation damper motor position sensor open circuit or shorted to 12 volts
236Recirculation damper motor position sensor shorted to earth
311Driver’s side damper motor shorted to earth or shorted to 12 volts
312Passenger’s side damper motor shorted to earth or shorted to 12 volts
313Ventilation damper motor shorted to earth or shorted to 12 volts
314Floor/defrost damper motor shorted to earth or shorted to 12 volts
315Recirculation damper motor shorted to earth or shorted to 12 volts
321Driver’s side damper motor active too long
322Passenger’s side damper motor active too long
323Ventilation damper motor active too long
324Floor/defrost damper motor active too long
325Recirculation damper motor active too long
411Blower fan seized or drawing excessive current
412Driver’s side interior temperature sensor inlet fan shorted to earth
413No control voltage at driver’s side interior temperature sensor inlet fan
414Driver’s side interior temperature sensor inlet fan seized
415Passenger’s side interior temperature sensor inlet fan shorted to earth
416No control voltage at passenger’s side interior temperature sensor inlet fan
417Passenger’s side interior temperature inlet fan seized
418No control signal to blower fan power stage
419Faulty diagnostic signal from blower fan power stage
420ECU fault in program memory
511Damper motor limit position self-adjustment not carried out
B2 — Cruise Control
111No faults detected
112Abnormal speed signal
122Speed has not exceeded 22mph or no speed signal
211Control module malfunction
212Malfunction in the circuit to the vacuum pump or regulator
B5 — SRS
111No fault detected
112Sensor module fault
127SRS lamp open/short circuit
211Drivers airbag short circuit
212Drivers airbag open circuit
213Drivers airbag short circuit to ground
214Drivers airbag short circuit to supply
221Passenger airbag short circuit
222Passenger airbag open circuit
223Passenger airbag short circuit to ground
224Passenger airbag short circuit to supply
231Left belt tensioner short circuit
232Left belt tensioner open circuit
233Left belt tensioner short circuit to ground
234Left belt tensioner short circuit to supply
241Right belt tensioner short circuit
242Right belt tensioner open circuit
243Right belt tensioner short circuit to ground
244Right belt tensioner short circuit to supply

44 Comments

hi all thank you for excepting me as i am new to volvo . i have recently purchased an 850 1994 model 2.3 turbo in very good condition. i loved this model ever since jim richards drove his to victory . although the car is in great condition i have had trouble with the pnp switch . i removed it from the car and re-furbished it to like new . it worked good for a couple of days and now my arrow is flashing again . i ran diagnostics and is telling me the the STC solenoid open or power fault if i clear the code the flashing stops for about a minute then starts flashing again and 3rd gear is selected. any help would be appreciated as i would really like to do the work myself . its not the money its just the satisfaction of doing it myself . thank you all. if any one has any questions please feel free to ask.

RE: 1994 Volvo 960 Sedan, 2.9L
1 – Put a “used, in-tank”fuel pump because fuel guage had stopped working;
2 – then, I had to add a new “in-line” fuel pump;
3 – since performing steps 1 & 2, above, RPM’s fluctuate (i.e. 500 – 1,000, and everything in between;
4 – often I have to press accelerator to get engine to start (NOTE: NEVER had to do this until I performed items 1 & 2, above);
5 – now I am having “rough idling/miss-fire”;
6 – since my 1994 Volvo 960 sedan, 2.9L doesn’t have OBD port, how do I analyze engine performance?

Hi I have a srs airbag light on but the the error code comes up de58 passenger junction box A
that’s the only code to be cleared.

can someone tell me please where that’s is

Good afternoon, yesterday Sunday September 18, 2016, I finally got around to reading the codes in my Volvo 850 Wagon of 1995 vintage. Amongst the many, many misfire codes I followed the procedure to erase the codes and it worked on port A-1 however in port A-2 it did not work giving me the same code sequence! Any insight ?

95 940 sedan put a new alternator in and now it seems that it has a bad miss in it. Strong smell of fuel and no power. Idle up and down. Was thinking a maf sensor. Checked code and came back as maf. Can I reset this or do I simply replace maf sensor

I have a Volvo 850 T5 GLT 1995. Just resurrected after standing outside for over 6 years, it is now MOTed.

The only modules that have terminals in are (with Fault Codes):-
A2 535 TC Control Valve Signal & 125 Injector 2
A3 141 & 142 I cannot find Faults in your section on these? (Haynes Manual says Faulty Brake Pedal Position sensor, shorted to earth or supply & Faulty Stoplight Switch, open or short circuit) Respectively
A7 No Faults
B1 No Light up of LED
B2 No Light up of LED
B5 No Faults
B6 No Light up of LED

Can anyone help me with this please as it is so frustrating. My Haynes Manual reads somewhat different to what is written here. I would appreciate someone’s input as to why I only have the above terminals in the Modules A & B.

Thanking you all in anticipation
Tony Muse [email protected]

I’ve put a new battery into my car volvo s40 and power steering service is urgently needed is on the panel and the red battery light is flashing. There’s no leaks and power steering fluid looks topped up enough .can you direct me how bad this could be .

After I checked with my dealer what the status was on my Volvo XC 90 T8 in the factory in Sweden they received the answer that the car was “under analysis”. That should take 2 days and then a FC was expected before shipment.

Sounds to me like it’s being evaluated for quality assurance (“QA”). But I don’t know for sure. Post this in the forum, and perhaps member Jimmy57 would know. He worked for Volvo.

My 1997 Volvo 850 is trowing a check engine light and my Dashcommand says it is a PO440 ! which is a EVAP system leak… is this the correct code or is it a generic code? not sure, please help! email me if possible. Thank you

My volvo 2.3 petrol is missing on one pot.it was running fine till i got home then the engine light started flashing and it started missing.i had just filled with fuel and driven 15miles . Do you think it could be the fuel filter or coil packs? Kind regardes tim.

I was able to call around to different volvo dealers on saturday morning, (seems to help guys in service dept. seem happier ). More likely to help you out without a charge ! you can try service or parts : have your VIN# ready… Good Luck best wishes !!!

My 98 volvo s70 has 383,000 miles and I have a check engine light still on after being cleared; it came back on but there are no codes at all. The check engine light is still on. When the car is off the light goes out then comes back!

I have a 96 960 and miss not having the under hood obd1 that my 90 740 used to have. being a 96, if i get a set of diagnostic boxes from a used vehicle (both A&B), and i have the wiring diagrams, would i be able to “retrofit” (not really retro since its moving forward in years)this into my 960? all sensors are same, they just bundled some of the cables together with a relay to push out to OBDii port 7. since the 850 95 had both, there is a great wiring diagram showing both systems working in tandem.

I have a 2003xc70 turbo with engine check light on car will not start I have a code reader but don’t know what to do after I read the codes and how to reset the light.
Thanks in advance.

S60-2001-T5 -AUTO
1-car showing ENGINE CHECK LIGHT & ORANGE TRIALGLE?
2-when stopping car change down is not smooth there is a GU SOUND?

What could be the problem guys?

Boa tarde ,senhores!!
Quero desde já parabeniza-los pelo site contendo grandes informações para todos usuarios.
Gostaria de saber se estes códigos de avarias servem para o volvo 850 turbo,e se os mesmos estão completos?tenho uma e a luz da sonda lambda está acesa e não sei como apagar.Conto com a ajuda de vocês……

Obrigado pela atenção ,
Regis Valder
São Paulo – Brasil

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