Question about 1992 Cadillac DeVille

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Giving the code E.27 - 1992 Cadillac DeVille

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E27 Open Throttle Switch Signal here is a list of all codes E12 No Distributor Reference Signal E13 Oxygen Sensor Not Ready E14 Shorted Coolant Sensor E15 Open Coolant Sensor E16 Generator Voltage Out of Range E19 Shorted Fuel Pump Circuit E20 Open Fuel Pump Circuit E21 Shorted Throttle Position Sensor E22 Open Throttle Position Sensor E23 EST Signal Problem E24 Speed Sensor Circuit Problem E26 Shorted Throttle Switch Circuit E27 Open Throttle Switch Signal E30 ISC RPM Out Of Range E31 Shorted MAP Sensor Signal E32 Open MAP Sensor Signal E34 MAP Sensor Signal Out Of Range E37 Shorted MAT Sensor Signal E38 Open MAT Sensor Signal E39 VCC Engagement Problem E40 Power Steering Pressure Switch Signal E41 Cam Sensor Signal Problem E44 Oxygen Sensor Signal Lean E45 Oxygen Sensor Signal Rich E47 BCM to PCM/ECM Data Problem E48 EGR System Problem E52 PCM/ECM Memory Reset E53 Distributor Signal Interrupt E55 Closed Throttle Angle Out of Range E58 Pass Key Control Problem E60 Cruise - Not In Drive E61 Cruise - Vent Solenoid Problem E62 Cruise - Vacuum Solenoid Problem E63 Cruise - Set Speed vs Vehicle Speed E64 Cruise - Acceleration Too High E65 Cruise - Servo Position Signal Problem E66 Cruise - Engine RPM Too High E67 Cruise - Switch Shorted E68 Cruise - Command Problem E70 Intermittent TPS E71 Intermittent MAP E73 Intermittent Coolant Sensor E74 Intermittent MAT Sensor Signal E75 Intermittent VSS Signal E80 Fuel System Rich E85 Idle Throttle Angle Too High E90 Cruise - VCC Brake Switch Signal Problem E91 Cruise - PRNDL Switch Problem E92 Heated Windshield Request Problem E96 Torque Converter Overstress E97 P/N To D/R Engagement Problem E98 P/N To D/R ISC Engaged Problem E99 Cruise - Servo Apply Problem

Posted on Aug 11, 2013


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04 mazda 3 giving error code for Mac sensor already replaced still giving code car running lbad what could be wrong that's the only code it's giving

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Code 27 keeps coming back 93 Dakota V-6

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I have a 1991 Dakota it has two trouble codes on is#12 memory standby power lost the other is # 27 injector output circuit not responding what does this mean and to fix it

Code 12 is more or less common, code 27 is a problem with the injector or the circuit.
You may need to research the code 27 to get the testing procedure and the wiring diagram. Usually the reason for the code is too much resistance in the circuit or an open circuit. The computer grounds the injector to make it open.

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I have a 91 Buick Century limited 3.3L with a 3300 engine. I ran a diagnostic scan of which produced the two-digit codes 12, 26, and 27, and In attempting to look up these codes, I found a website on...

DTC 26 and 27 refers to a QDM (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 or 27 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.

Also, 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.

Hope this helps; also keep in mind that your feedback is important and I will appreciate your time and consideration if you leave some testimonial comment about this answer.

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My 2005 Ford Taurus is giving code 2195 and 2197, what can be the problem?

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I show 27 possible causes for that

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The front 2 closest to the engine, are to be
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I have 1996 Dodge Gran Caravan, and it gives me these codes: 27 and 43, what do they mean??

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Code 27 MIL light options: OBDII
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P0202 - Injector #2 Control Circuit
P0203 - Injector #3 Control Circuit
P0204 - Injector #4 Control Circuit
P0205 - Injector #5 Control Circuit
P0206 - Injector #6 Control Circuit

CODE 43 - Cylinder Misfire, or Ignition Primary Circuit

CODE $# MIL options: OBDII
P0300 - Multiple Cylinder Misfire
P0301 - Cylinder #1 Misfire
P0302 - Cylinder #2 Misfire
P0303 - Cylinder #3 Misfire
P0304 - Cylinder #4 Misfire
P0305 - Cylinder #5 Misfire
P0306 - Cylinder #6 Misfire
P0351 - Ignition Coil #1 Primary Circuit
P0352 - Ignition Coil #2 Primary Circuit
P0353 - Ignition Coil #3 Primary Circuit

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