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27 b &28 c quad driver module codes

Replaced wire harness & computer come up with those code on my scanner checked for dirt and bad connection

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

chiquititas
  • 1010 Answers

SOURCE: 2001 hyundai elentra scanner said i have a bad cam sensor and map sensoer replaced both and the scanner is still reading the same code

The problem is in your steering wheel

Posted on Jun 26, 2008

  • 114 Answers

SOURCE: obd 2 connector does not work with any code scanner

HI there....Check to see if the code reader is a CAN OBD 2 code reader. If it is only OBD2 , that may be the problem. In 2003 Some vehicle manufacturers ( ford,Gm,Mazda and Saab) began using a new computer protocol called Controller Area Network (CAN) with the OBD2 and if your vehicle is CAN OBD 2 the simple OBD2 code reader will not work.Contact your local dealer to determine if you vehicle is CAN or not or find a code reader that is CAN OBD2 capable. Hope this helps you out

Posted on Jan 24, 2009

SOURCE: 99 mercedes e320.check engine light on.po341

that appears to be a camshaft position sensor performance code. you can start by checking to see if the sensor is working properly, re-check and make sure that the harness is ok by checking the resistance through the harness if all looks well there make sure the computer has the latest software on it by having it scanned at your local dealer. also you can check the reluctor wheel on the camshaft for damage or debris in the way of the sensor.

hope this helps!

Posted on Feb 17, 2009

66 chrgr
  • 1011 Answers

SOURCE: i have a 1991 olds cutlass cierra. code 26 quad

THE QUAD DRIVER IS BUILT IN THE COMPUTER.I WOULD REPLACE THE COMPUTER THEY ARE NOT EXPENSIVE ON YOU VEHICLE.LOCATED RIGHT FRONT INSIDE KICKPANNEL!

Posted on Feb 26, 2009

  • 1 Answer

SOURCE: 1992 saturn coupe 4 cyl motor twin cam

that code is your egr valve or your egr solenoid.sometimes you can remove valve and clean thoroughly with brake cleaner for a cherap alternative.

Posted on Mar 21, 2009

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I have 2000 impala.. Code 0481 I've replaced the relay even though both fans turn on fine. I also swapped the plugs to see if I would get a fan 1 code and still got 0481. Any ideas?


DTC P0481Cooling Fan Relay 2 Control Circuit .
You swaped what plugs ? Fan's ? That wouldn't change anything ! You need to know how these duel fan set up's work . With this code the fans will still work in low speed , not high !
Output driver modules (ODMs) are used by the PCM to turn on many of the current-driven devices that are needed to control various engine and transaxle functions. Each ODM is capable of controlling up to 7 separate outputs by applying ground to the device which the PCM is commanding ON. Unlike the quad driver modules (QDMs) used in prior model years, ODMs have the capability of diagnosing each output circuit individually. If an improper voltage level has been detected on ODM B output 2, which controls the high speed, relay 2, and series/parallel cooling fan relays, DTC P0481 will set.
Do you know how to do automotive electrical testing ?
Diagnostic Aids
Check for the following conditions:
• Poor connection at PCM -- Inspect harness connectors for the following items:
- Backed out terminals
- Improper mating
- Broken locks
- Improperly formed or damaged terminals
- Poor terminal to wire connections
• Damaged harness -- Inspect the wiring harness for damage.
• If the harness appears to be OK, disconnect the PCM, turn ON the ignition and observe a digital multimeter connected between the Fan Relay 2 driver circuit and ground at the PCM harness connector while moving connectors and wiring harnesses related to the series/parallel fan relay and the high speed fan relay. A change in voltage will indicate the location of the fault.
If the DTC cannot be duplicated and is determined to be intermittent, reviewing the Failure Records can be useful in determining when the DTC was last set. Also refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.


Relay Driven Dual Cooling Fan Diagnostics

Apr 24, 2017 | Cars & Trucks

1 Answer

My 1998 pontiac grand prix gt has A code po1676


DTC P1676 Evaporative Emission (EVAP) Purge Solenoid Control Circuit
DTC P1676 set indicates an improper voltage level has been detected on the output circuit which controls the EVAP purge solenoid.
Circuit Description
Output Driver Modules (ODMs) are used by the PCM to turn on many of the current-driven devices that are needed to control various engine and Transaxle functions. Each ODM is capable of controlling up to 7 separate outputs by applying ground to the device which the PCM is commanding ON. Unlike the Quad Driver Modules (QDMs) used in prior model years, ODMs have the capability of diagnosing each output circuit individually.
Diagnostic Aids
Check for the following conditions:
?€¢
Poor connection at the PCM.


Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.


?€¢
Damaged harness.


?€¢
Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the PCM, turn the ignition ON and observe a voltmeter connected between the EVAP purge solenoid control circuit and ground at the PCM harness connector while moving connectors and wiring harnesses related to the EVAP purge solenoid. A change in voltage will indicate the location of the malfunction.

.

May 01, 2015 | Pontiac Grand Prix Cars & Trucks

1 Answer

93 buick regal 3.8 codes 26QMD &42EST PLUS POOR GAS MILAGE


Code 26 is for a problem with one of the quad drivers inside the engine computer, or the wiring harness, and code 42 is for a problem with the ignition module or the control.
You'll need a shop manual with the testing procedures for each code to proceed.

Feb 24, 2015 | 1993 Buick Regal

1 Answer

I recently bought 2001 Grand Am SE with a 2.4 quad. The ABS, service engine, and trac control lights came on, the scanner showed a code for a bad right front ABS sensor. The sensor looked like it h


broken wire on harness? I have had troubles in the past with this kinds issue. remove wheel, brake caliper, rotor and you should have access to the sensor. most time they are connected with a allen bolt. remove abs sensor and you will find a fuzzy metal like stuff on it. Like draging a magnet on the dirt, sometimes just cleaning it off will do the trick. the fuzz interferes with signal and set off the code. Here is were its your choice ether clean it off and reinstall or replace with new sensor.

May 31, 2012 | 2001 Pontiac Grand Am SE

1 Answer

Quad driver module computer circuit #2 fault ?


I will start by pinout check current + to ECM and - ground there is many .
A Quad driver work like a big fuse d?pends some are resettable and other not reset(ECM defect) if it is so then you have to check all solenoid not short to ground before replacing ECM it will burn without checking the solenoid
hope it help

Feb 08, 2012 | 1988 Oldsmobile Delta 88

1 Answer

95 grand am codes 34,27,55,19


Are you sure about your reading, Code 19 isn't listed.

DTC OBD I Code 34
Description: Speed control solenoid(s) circuit is open or shorted
Notes: For vehicles equipped with speed control

Possible Causes
- Bad connection or wiring - Check the wiring and connections between the logic module and the solenoid. Clean and regrease any corroded connectors with dielectric grease and repair any shorts.
- Bad solenoid(s) - The speed control is located near the battery and will have to be disassembled.


DTC OBD I Code 27
Description: Injector driver circuit 2 open or shorted

Possible Causes
- Bad connection or wiring - Check the wiring and connections to injectors 3 and 4 in the injector harness (above the fuel rail) and between the harness and the power module (or SMEC) and the injector contol lines between the logic module and power module. Clean and regrease any corroded connectors with dielectric grease and repair any shorts.
- Injector driver transistor failure - Check the injector signals coming from the power module (or SMEC). They should rise to about 12V when the injector is off and drop close to 0V when the injector is on. If they are out of spec, you may need to replace the power module.


DTC OBD I Code 55
Description: End of message

Possible Causes
No further fault codes are stored. If this is the only code received, then there are no codes stored in memory. This code will always be given, even if nothing is wrong. If you do not get this code, then you may not be retreiving the codes properly, or the power loss light may be burnt out. The light should come on for 1 second when the ignition is initally turned on as a bulb test.


I hope this helps; remember to rating this and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment.

Have a nice day and thanks for using FixYa.
Jose.

Oct 17, 2011 | 1995 Jeep Grand Cherokee

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

4 Answers

HAVE CODE 26--CHECK RESISTANCE ON INJECTORS, EGR SOLINOID & PURGE SOLINLID--REPLACE PCM. STILL HAVE SAME PROBLEM. CAN YOU HELP? LARRY


There's a lot of information regarding your problem here:

http://www.saturnfans.com/forums/showthread.php?t=284

My suggestion would be to contact a local dealer and have them run the diagnostic (usually under $100), then if the part is easily replaceable, do it yourself. If it's more involved, then bargain with the dealer on a good price to have the problem fixed.

I truly hope that the Quad Driver itself isn't what's causing the code.

Nov 02, 2009 | 1993 Saturn SL2

1 Answer

Code 26 what does it mean


DTC 26 refers to a quad driver module fault. The quad driver is a "safety valve" for the ECM controlled circuits. The quad driver controls up to 4 circuits. There are multiple quad drivers in the ECM. The QDM shuts down a shorted circuit to prevent high current flow from damaging the ECM.
So the DTC 26 will isolate the problem to 1 QDM. You will need a repair manual with electrical diagrams and DTC flow charts to determine which of the circuits controlled by that QDM are failing. Usually DTC 26 refers to the Torque Converter Clutch solenoid and related circuit.
Most likely you have a shorted TCC solenoid or the harness connected to it, The solenoid is internal in the transmission accessible from the side cover.

I will assume this is a 3800 V6 w/ 4T440 / 440 T4 transmission with the digital (3 solenoid valves) EGR valve.
Keep in mind the single most cause for any code will be a power or ground problem. Clean all the battery cables, and any and all cables or wires that attach from the engine to the firewall. Many problems can be resolved by just doing this. Many times a computer will give false codes when it doesn't get the correct amount of voltage, or a good ground is not established between the battery, engine, and the body of the vehicle.
Glad to help out, Good Luck!!!

Oct 28, 2009 | 1989 Pontiac Bonneville

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