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My truck is flashing 12 and 27 engine codes - Cars & Trucks

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Google your year,vehicle,mfg & codes

eg: 1995 chevy GM OBD Code ****

Posted on Dec 05, 2014

  • Anonymous Dec 05, 2014

    Dakota -info is on the internet google your codes OBD 1 code 12 & 27

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Where is the obd2 connector location on holden ra rodeo v6


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Connect white (test lead) and black (ground lead) wires that are branched from harness approximately eight inches from ECM. After leads are grounded, the "Check Engine" light will flash the diagnostic trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.I-MARK 84-85
Connect male and female test leads taped into wire harness near ECM. After leads are connected, the "Check Engine" lamp will flash the trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.
86-87 Impulse located near the ECM connector, is used to actuate the Engine Control Module (ECM) trouble code memory within the module. Two terminals (A and C) of this connector are used to activate the diagnostic trouble code system in the ECM. With the ignition switch turned On, engine Off, connect a jumper wire between terminals A and C. The "Check Engine" lamp will begin by flashing a DTC 12. DTC 12 = flash, pause, flash, flash. There will be a longer pause and a code 12 will repeat two more times. This code indicates the self-diagnostic system is operating. The cycle will then repeat until the engine is started or the ignition is switched Off. In most cases, DTC's will be checked with the engine running since no DTC's other than DTC 12 or 51 will be present without the engine running. Remove jumper wire from ALDL connector before starting engine. Reconnect jumper wire after engine is running.

Throttle Body Fuel Injection

The ECM test connection is located under the center console.
A built-in, self diagnostic system will identify problems in the throttle body fuel injection system. When a problem is detected, the diagnostic system will illuminate the "Check Engine" light.
When the engine is started, the Check Engine light should turn off.. If the light remains lit, the self diagnostic has detected a problem. To determine where the problem exists, ground the "Test" terminal of the connector with the ignition On, engine Off and watch the check engine light. Each DTC will flash three times (lowest to highest).

Aug 21, 2014 | Holden Rodeo Cars & Trucks

2 Answers

Where is diagnostic port on a 1991 mazda 929


It hasnt got a OBDII but i seem to remember a special plug under the bonnet ,then i gave up and changed a vacumn pipe to a sensor and it run like a dream

Dec 19, 2012 | Mazda Cars & Trucks

1 Answer

What is service engine light code 12 mean



READING CODES USING MIL (CHECK ENGINE) LAMP

Be advised that the MIL or CHECK ENGINE light can only perform a limited number of functions and it is a good idea to have the system checked with a scan tool to double check the circuit function.

  1. Within a period of 5 seconds, cycle the ignition key ON - OFF - ON - OFF - ON .
  2. Count the number of times the MIL (check engine lamp) on the instrument panel flashes on and off.

The number of flashes represents the trouble code. There is a short pause between the flashes representing the 1st and 2nd digits of the code. Longer pauses are used to separate individual 2-digit trouble codes.
An example of a flashed DTC is as follows:


Lamp flashes 4 times, pauses, then flashes 6 more times. This denotes a DTC number 46. Lamp flashes 5 times, pauses, then flashes 5 more times. This indicates a DTC number 55. DTC 55 will always be the last code to be displayed.


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Fig. Fig. 2: Diagnostic trouble code chart (1 of 2)-1995-97 engines


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Fig. Fig. 3: Diagnostic trouble code chart (2 of 2)-1995-97 2.0L engines

Jul 26, 2012 | 1995 Dodge Neon

1 Answer

Engine stops while driving,will not start or stay running for hours,only to die again in short time replaced fuiel pump pcv valve,fuel filter


Hi there,

Do not replace any further components until you have your On-board diagnostic (OBD2) codes read.

Your vehicle is fitted with a sophisticated OBD computer which monitors the performance of all engine emmission sensors and components.

By jumping pins 5 & 6 of your datalink connector (DLC connector located under dash, above driver's knee), your Engine Check light will flash the codes present stored in memory.

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  1. Run the engine until it reaches operating temperature, then turn engine OFF.
  2. Using a thin jumper wire (speaker wire will do), join pins 5 & 6 (note this connector may be upside down).
  3. Turn ignition key to ON (do not run engine) - the Engine Check light should start flashing.
  4. The 1st group of flashes is the 1st digit of the code; (short pause), 2nd group of flashes is the 2nd digit of the code (short pause) and so on. Note: codes will be separated by a long pause. E.g. Flash, Flash, Flash (short pause), Flash, Flash (short pause); Flash, Flash, Flash denotes: Code 323 etc
  5. Codes will usually repeat - turn key to OFF, once codes have been correctly read.
If the above procedure works for you, please post your codes on here and one of us will assist you with further diagnosis.


Cheers,

Aug 27, 2011 | 1997 Chevrolet Camaro

3 Answers

How to get the trouble codes for a 1992 dodge spirit


turn the key on,off,on,off,on,the check engine light will flash the codes.For instanse code 34 would be 3 flashes,a pause ,then 4 flashes.Will always have a 55 code because the engine is not running.

Feb 23, 2011 | 1992 Dodge Spirit

1 Answer

Engine code


12 and 55. The 55 means end of code session, the 12 means no distributor reference. Both of these codes are normal with the engine not running, so do not go out and purchase a dstributor. Is there another problem with the vehicle, or did you just want to know the codes? Comment back to continue,thanks.

May 26, 2010 | 1995 Jeep Grand Cherokee

1 Answer

Check engin light


it is flashing the codes if you got the sequence right it is codes 12,21,55 what engine? 12 battery disconnect,21 isO2S shorted to voltage, and 55 is MIL may not come on

Mar 05, 2010 | 1995 Jeep Grand Cherokee

1 Answer

My grand voyager check engine light keeps coming on,but i do not know the problem.its a van.


cycle key, on,off,on,off,on & leave on (not start) now count flashes of check engine light, 2 digit numbers. For example. flash,flash,flash, pause, flash, flash, flash, is code 33. or flash, flash, pause, flash, is code 21. Write them down & get back to me. when you get code 55, that's telling you end of message.

Apr 18, 2009 | 1995 Plymouth Grand Voyager

1 Answer

Check engine light on


Cycle your key, on (not start) off, on, off, on. Leave it on 3rd time, and count check engine flashes. It will be a 2 digit number each time. For example: flash,flash, pause, flash, flash. Is code 22.
Flash,flash,flash,pause,flash,flash,flash, is code 33. There will be a little longer pause after each set of 2 digits. When you get flash,5 times, then flash 5 times again, that's code 55 which means end of trouble code message. have a piece of paper ready, write them down, and get back to us with results.

Feb 20, 2009 | 1989 Plymouth Reliant

1 Answer

1989 dodge caravan 2,5 engine throttle body


Check for vacuum leaks. Cycle key, on, off, on, off, on, and see if check engine light flashes out codes. always 2 digit number with short pause in between. for example: 2 flashes, pause, 2 more flashes, is code 22. Write them down & get back to us. Code 55 (5 flashes, pause, 5 flashes, is end of message (codes).

May 18, 2008 | 1989 Dodge Caravan Cargo

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