Question about 1995 Oldsmobile Cutlass Ciera

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What is a 1640 Quad Driver A Error code? This is on a 1995 olds ciera

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Posted on Jan 02, 2017

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Posted on Feb 18, 2010

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SOURCE: i have a 1995 buick

The quad driver in the ecm operates the higher amp draw for certain relays and solenoids one of them is faulty or there is a short to ground in the wiring.You will have to locate a wiring diag. and figure out which quad driver is the bad one and see what it controls.There should be at least 2 quad drivers maybe more and they would be numbered in the diag.

Posted on Mar 22, 2010

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Codes trouble olds engine troublecodes

quad driver A fault
ECM module have input and ouput, quad driver are there to activate a solenoid or relay
quad driver A drive a few of those output
example quad driver A control canister purge solenoid and the solenoid is defect . the quad driver will kick off until you change the solenoid
there is two kind of driver 1984 to will reset if trouble is repair
the other one is the ecm module itself have to be change after is repair .....(quad driver act has a driver or big fuse)

Oct 18, 2013 | 1992 Oldsmobile Cutlass Ciera

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Well code 640 is usually found on diesel engines for a problem with the intake air heater circuit.
There is a code 1640 for some GM cars which is for a problem with one of the quad drivers inside the computer.
You may want to get a second opinion on the code to make sure it really is 640.

Apr 06, 2013 | Oldsmobile Achieva Cars & Trucks

1 Answer

1993 olds Cutlass check engine code 26

I have the haynes repair manual from 1982-1996 oldsmobile cutlas ciera & Cutlas cruiser in the book it say the code 26 is the Quad Driver Module Circuit I hope this helps

Jan 15, 2012 | 1993 Oldsmobile Cutlass Ciera

1 Answer

I"ve got a '95 olds cutlass ceira that has a

It sounds more like it's a suspension problem. Pull your from wheels off and examine the CV joints, boots, and take a look at your shocks to make sure they are in good condition. Your diagnostic tool, as far as I can tell, is picking up a problem somewhere else in your vehicle and has nothing to do with your front end suspension.

Jun 23, 2011 | 1995 Oldsmobile Cutlass Ciera

2 Answers

Need help in replacing spark plugs on a 1995 olds cutless ciera the wiring order with diagram

1995 Oldsmobile Cutlass Ciera 3.1 liter V-6 VIN "M"


1995 Oldsmobile Cutlass Ciera 2.2 liter L4 VIN "4"


Hope this helps (remember to rate and comment this answer).

May 09, 2011 | Oldsmobile Cutlass Ciera Cars & Trucks

1 Answer

When i pull the code up on my 1992 park avenue it blinks once then blinks twice. what does this code mean?

This is code 12 and it means "System Normal"
Here is the complete list of fault codes for your Buick
GM common codes for OBD1 (for vehicles made before 1995)
12 System normal
13 oxygen sensor circuit open
14 coolant sensor high resistance or shorted
15 coolant sensor circuit low or open
16 direct ignition system (DIS) fault in circuit
17 cam position sensor fault
18 crank or cam sensor error
19 crank sensor circuit fault
21 tps sensor out of range
22 tps sensor signal voltage low
23 intake air temp sensor out of range, low
24 vehicle speed (vss) sensor circuit fault
25 air temp sensor sensor out of range, high
26 quad-driver module (computer) circuit #1 fault
27 quad-driver module (computer) 2nd gear circuit
28 quad-driver module (computer) circuit #2 fault
29 quad driver module (computer) 4th gear circuit
31 cam position sensor fault
32 egr circuit fault
33 map sensor signal out of range, high
34 map sensor signal out of range, low
35 idle air control sensor circuit fault
36 ignition system circuit error
38 brake input circuit fault
39 clutch input circuit fault
41 cam sensor circuit fault, igntion control circuit fault
42 electronic spark timing (EST) circuit grounded
43 knock sensor
or electronic spark control circuit fault
44 oxygen sensor lean exhaust
45 oxygen sensor rich exhaust
46 pass-key II circuit or ps.pressure switch circuit fault
47 pcm-bcm data circuit
48 misfire diagnosis
51 calibration error, mem-cal, ecm or eeprom failure
52 engine oil temperature circuit, low temperature indicated
53 battery voltage error or egr or pass-key II circuit
54 egr system failure or fuel pump circuit low voltage
55 a/d converter error or pcm not grounded or lean fuel or frounded reference voltage
56 quad-driver module #2 circuit
57 boost control problem
58 vehicle anti-theft system fuel enable circuit
61 a/c system performance or degraded oxygen sensor signal
62 engine oil temperature high temperature indicated
63 oxygen sensor right side circuit open or map sensor out of range
64 oxygen sensor right side lean exhaust indicated
65 oxygen sensor right side rich exhaust indicated
66 a/c pressure sensor circuit low pressure
67 a/c pressure sensor circuit or a/c clutch circuit failure
68 a/c compressor relay circuit failure
69 a/c clutch circuit head pressure high
70 a/c refrigerant pressure circuit high
71 a/c evaporator temperature sensor circuit low
72 gear selector switch circuit
73 a/c evaporator temperature circuit high
75 digital egr #1 solenoid error
76 digital egr #2 solenoid error
77 digital egr #3 solenoid error
79 vehicle speed sensor (vss) circuit signal high
80 vehicle speed sensor (vss) circuit signal low
81 brake input circuit fault
82 ignition control (IC) 3X signal error
85 prom error
86 analog/digital ecm error
87 eeprom error
99 power management

May 05, 2011 | Buick Park Avenue Cars & Trucks

1 Answer

I have a 1995 buick la sabra i got an error code po676 quad driver module failure i replaced the E C M and i am still getting the same code

The quad driver in the ecm operates the higher amp draw for certain relays and solenoids one of them is faulty or there is a short to ground in the wiring.You will have to locate a wiring diag. and figure out which quad driver is the bad one and see what it controls.There should be at least 2 quad drivers maybe more and they would be numbered in the diag.

Mar 21, 2010 | 1995 Buick LeSabre

1 Answer

95 olds cutlass shifts eratic and hard, I have no error code related to the transmission that I know of, the only code I have is faulty selnoid in the EGR valve, but during dianostic testing it shows---...

Change the transmission fluid and filter. Most vehicle owners do not do this enough (if at all!) and do not realize its importance. Fluid becomes gummed up which dramatically affects shift points and throttle valve performance. With your severity, I would suggest a full backflush by a mechanic.

Aug 26, 2009 | 1995 Oldsmobile Cutlass Supreme

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