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Codes: 1996 to 1998 Volvos

A Little Background on On Board Diagnostics

OBD-II grew out of an effort in the late 1960s by Volkswagen to computerize the monitoring of an automobile’s running status. The thinking went like this:

Is something wrong with the car? Well then let’s record it, remember it, and spit it out for the owner or technician.

That’s what your Volvo does. That’s where On Board Diagnostics came from.

The US state of California required all 1991 new cars to have a computer that would not only facilitate this recording of faults, but provide a common method of retrieving them across brands and models [citation]. It was an open format, in other words.

The “Middle” Year Volvos: 1996-1998

OBD-II diagnostic trouble codes are 4-digit, preceded by a letter:

  • P for engine and transmission
  • B for Body
  • C for Chassis
  • and U for Network

Please help us add to this by posting your additions to this topic.

On Board DTC (850)Generic OBD CodeMeaning of CodeMore Info
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 Solenoid STH short circuit to battery voltageviewtopic.php?t=16229
124 Mode selector faulty or short circuit to groundviewtopic.php?p=63292
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 
233P0500Incorrect speedometer signalviewtopic.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 
115P0201Injector 1 
121P0102 (low), P0103 (high)MAF sensor signal 
123P0117 (low), PO118 (high)ECT signal 
125P0202Injector 2 
131 RPM sensor signal missing 
132 Battery voltage 
135P0203Injector 3 
143P0326Front knock sensor signal 
145P0204Injector 4 
153P0136 (faulty), P0137(low), P0138 (high)Rear HO2S signal 
154P0402EGR system leakage 
155P0205Injector 5 
212P0130 (missing/faulty), P0131 (low), P0132 (high), P0133 (slow)Front HO2S signal 
214P0336RPM sensor signal sporadic 
223P1505 (low), P1506 (high)IAC valve opening signal 
225 A/C pressure sensor signal 
231P0171 (part load), P0172 (part load)Long term fuel trim, part loadP0172 code broken elbow
232P0171 (lower limit)Long term fuel trim, idling 
233P0172 (part load & upper limit)Long term idle air trimP0172 code broken elbow
241P0400EGR system flow malfunction 
245P1507 (low), P1508 (high)IAC valve closing signal 
311 VSS signal 
314 CMP sensor signal 
315P0440EVAP system 
325 Memory failure 
335P1617, P1618Request for MIL lighting from TCM/viewtopic.php?f=1&t=27973
411P0122 (low), P0123 (high)TP sensor signal 
413P1416 (Faulty), P1417 (Low), P1418 (High)EGR temp sensor signal 
414 Boost pressure reduction from TCM 
416 Temperature warning level 1 
432P0331Rear knock sensor signal 
433P0331Front HO2S slow response 
435P0133 (slow),Front HO2S slow response 
436 Rear HO2S compensation 
443P0422Three way cat. Efficiency/forums/viewtopic.php?f=1&t=22996 California emissions test with p0422 and p1171
444P1307 (low), P1308 (high)Acceleration signal 
451P0301Misfire cylinder 1 
452P0302Misfire cylinder 2 
453P0303Misfire cylinder 3 
454P0304Misfire cylinder 4 
455P0305Misfire cylinder 5 
513P1405Temperature warning level 2 
514 Engine cooling fan low speed signal 
521P0135 (low/high)Front HO2S Preheating 
522P0141 (low/high)Rear HO2S Preheating 
531P1101Power stage group A 
532P1102Power stage group B 
533 Power stage group C 
534 Power stage group D 
535 TC control valve signal 
541P0444 (low), P0445 (high)EVAP valve signal 
542P0300Misfire more than one cylinder 
543P1310Misfire at least one cylinder 
544P0300Misfire more than one cylinder, three way cat damage 
545P1310Misfire at least one cylinder, three way cat damage 
551P0301Misfire cylinder 1, three way cat damage 
552P0302Misfire cylinder 2, three way cat damage 
553P0303Misfire cylinder 3, three way cat damage 
554P0304Misfire cylinder 4, three way cat damage 
555P0305Misfire 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 
On Board DTC (850)Generic OBD CodeMeaning of CodeRepair/Info Location (850, 1st Gen 70 Series)
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 (not a code to worry about) 
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 

This is page 1 of 2. Continue on to Volvo Diagnostic Codes 1996 to 1998 page 2

13 Comments

mugishavianney says:

Sir,
i have found EFI-123 ECT error code!

What can i do?

Thanks

mugishavianney says:

Dear sir,
When i ignite my volvo car the fan switches on immediately even if the engine is not hot and the fan goes off after after 10 minute. Is there any fault on the engine?

Thanks

Vianney

mugishavianney says:

Dear sir,

What can be done when the EFI-123 ECT for Volvo 850 year 1996 is faulty and the car shows a warning sign!

Hi my question is.
9A0A error Code
990F error Code
Cant find where to find explanation.
I liv in sweden.
Volvo v50 2005 petroleum 2.4 non turbo.

Just had a 98 s70 come in with no A/C good pressure on the system (checked with A/C gauges) checked fuses all good, scan showed code 225 on the engine diagnostics section. cleared code A/C started working. so maybe just a glitch in the system.

graeme palmer says:

i overheated my 850 volvo 1996 model it started to make all sorts of noises frm the motor nd eventualy stoped i thought i had siezed the motor but the nxt day the engine turned over at a rapid pace leaving me to believe it was knackerd ive removed timing belt cover belt ok taken starter motor off seems ok no water in oil but it fails to restart

Edward Hall says:

This is my E-mail address.Edward Hall says:
Your comment is awaiting moderation.

July 22, 2013 at 7:03 am

I have a 1998 S90 volvo. I did a diagnostic test and it reads P0740. The check engine is on, flashing arrow comes on, there are three letters by the gear shift (WSE) The light flashes from W to E rapidly. What is the problem

Edward Hall says:

I have a 1998 S90 volvo. I did a diagnostic test and it reads P0740. The check engine is on, flashing arrow comes on, there are three letters by the gear shift (WSE) The light flashes from W to E rapidly. What is the problem

I have a 98 s70 glt. The code reads p0120. Is this why it doesn’t want to go when I give it gas? Also how do I fix this?

Have 1998 xc-70. has intermitent stalling and slow restart. Check engine light on. Generic codes have been PO-171 bank one system too lean and PO-103- mass or vacuum air flow circuit high input. Does this sound like air flow mass meter after air filter. Also 4-pin connector plug has I assume dielectric grease. Would this grease effect readings and is air flow meter gone and what should resistance readings be.

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