Hello all,

I have been a member for a while now and have received nothing but good info and most of the directions where great. I may have made a couple of errors but, all in all, I am having a good time and learning a whole lot.

I performed a self test on my '94 850 using the ports under the hood near the front on the passenger side and would like to list them here as I went through both of the ports (A + B) to see what codes could be pulled as I am fairly certain that I have a faulty brake switch which is causing my ABS light to come on.

A1 -

1-1-1 No fault found.

A2 -

1-1-1 No fault found.


A3 -

1-4-1 Pedal signal faulty - shorted to ground.
1-4-2 Stop lamp switch faulty.

Now these are the codes that I need help with.

A6 -

2-4-1
2-1-4
3-2-4
3-1-4
1-3-1

A7 -

1-3-2
1-2-2

These codes are from the B Side.

B1 -

1-2-2
1-3-2
1-3-4
4-1-1
4-1-3
4-1-4
4-1-5
4-1-6
4-1-7
4-1-8


B2 -

1-2-2

B5 -

1-1-1


What systems are A6 - B5 associated with? There seem to be a number of them and I've put alot of coin into the car already and I looking forward to some great summer driving. Prefferably trouble free.

If there is someone with the answers to these codes or if you are able to direct me to the information I need to decode them I will be very greatful.

[sm=icon_cheers.gif]

 

A6 is ignition Clear them all and see if they come back.
B5 is SRS but showed no codes in what you posted above.
B1 is climate control clear and see what comes back.

 

Thanks [sm=smiley20.gif]Tech,

Istartedchecking for codes for the ABS and decided to check all the positions. I should have asked what all of the A and B position designation meant. I know A1 to A3 but the rest???

I am still curious as to what all the B1 and B2 codes are? Or rather what they mean? Seems to be a number of them

Will reset in the morning and see what comes back and go from there.

[sm=icon_cheers.gif]

 

A6 - Ignition System
2-4-1: EGR flow incorrect.
2-1-4: VSS signal intermittent.
3-2-4: camshaft signal intermittent.
3-1-4: camshaft position sensor signal absent or faulty.
1-3-1: VSS signal absent.

A7 - Combined Instrument
1-3-2: engine speed sensor signal incorrect.
1-2-2: temp sensor interval too long.

These codes are from the B Side.

B1 - Electronic Climate Control
1-2-2: outside temp sensor circuit open or shortedto power.
1-3-2: driver's side duct temp sensor circuit open or shorted to power.
1-3-4: passenger side same as above.
4-1-1: passenger compartment fan over current or seized.
4-1-3: driver's side temp sensor intake fan, no control voltage.
4-1-4: driver's side temp sensor intake fan seized.
4-1-5: passenger sidetemp sensorintake fan shorted to ground.
4-1-6: passenger side temp sensor intake fan no control voltage.
4-1-7: passenger temp sensor intake fan seized.
4-1-8: no control signal to ECC power stage.


B2 - Cruise Control
1-2-2: speed below minimum or no signal.

B5 - SRS-Airbag
1-1-1: system normal or give JPN a green card or 1 billion dollars.

[sm=icon_rock.gif]


JPN

 

SWEEEEEET,

Thank youJPN [sm=smiley20.gif]for the information.

According to the codes the only thing working correctly on the car are the tires. I'm wondering whether or not these are things that I can repair myself or if this is going to be another expensive trip to the shop.

Where does one start?I wouldreally want to get the car back into the best shape possibleas theweather is getting much better here and without a garage working on the car will be more comfortable.

Where do I start?

Thank you for your help.

[sm=icon_cheers.gif]

 

[sm=thanx.gif]again JPN,

With you description of A6 - A7 - B1 - B2 and B5 I was able to find more information.

A BIG [sm=thanx.gif]to Matthew's Volvo Site for all of his efforts in the compilation of all of the following: http://www.matthewsvolvosite.com/cha...memberlist.php?
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[sm=signs007.gif]Thank you Matthews Volvo Site[sm=smiley20.gif]
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A1 – Transmission

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 voltage
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 Incorrect speedometer signal
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 Injector 1
121 MAF sensor signal
123 ECT signal
125 Injector 2
131 RPM sensor signal missing
132 Battery voltage
135 Injector 3
143 Front knock sensor signal
145 Injector 4
153 Rear HO2S signal
154 EGR system leakage
155 Injector 5
212 Front HO2S signal
214 RPM sensor signal sporadic
223 IAC valve opening signal
225 A/C pressure sensor signal
231 Long term fuel trim, part load
232 Long term fuel trim, idling
233 Long term idle air trim
241 EGR system flow malfunction
245 IAC valve closing signal
311 VSS signal
314 CMP sensor signal
315 EVAP system
325 Memory failure
335 Request for MIL lighting from TCM
411 TP sensor signal
413 EGR temp sensor signal
414 Boost pressure regulation
416 Boost pressure reduction from TCM
432 Temperature warning level 1
433 Rear knock sensor signal
435 Front HO2S slow response
436 Rear HO2S compensation
443 Three way cat. Efficiency
444 Acceleration signal
451 Misfire cylinder 1
452 Misfire cylinder 2
453 Misfire cylinder 3
454 Misfire cylinder 4
455 Misfire cylinder 5
513 Temperature warning level 2
514 Engine cooling fan low speed signal
521 Front HO2S Preheating
522 Rear HO2S Preheating
531 Power stage group A
532 Power stage group B
533 Power stage group C
534 Power stage group D
535 TC control valve signal
541 EVAP valve signal
542 Misfire more than one cylinder
543 Misfire at least one cylinder
544 Misfire more than one cylinder, three way cat damage
545 Misfire at least one cylinder, three way cat damage
551 Misfire cylinder 1, three way cat damage
552 Misfire cylinder 2, three way cat damage
553 Misfire cylinder 3, three way cat damage
554 Misfire cylinder 4, three way cat damage
555 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 Right rear wheel sensor, irregular >40 km/h
411 Left front wheel inlet valve, open/short
412 Left front wheel return valve, open/short
413 Right front wheel inlet valve, open/short
414 Right front wheel return valve, open/short
415 Rear valve open/short
421 Rear wheel inlet valve circuit, 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


[color=#3300cc][size=3][b]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 Contr

 

You're welcome, just make sure to double check the SRS code 1-1-1.


JPN

 

There is also a list somewhere on this site like that with all the codes.

 

Here is the post that was pinned at the top of the 850 section.
https://volvoforums.com/m_52326/tm.htm