P0903 Engine Diagnostic Code For Lincoln Zephyr

P0903 engine code for Lincoln Zephyr provides below are generic codes that may not apply to all vehicles. Lincoln Zephyr manufacturer uses specific Lincoln Zephyr diagnostic code that are different from the codes shown below. Foreign vehicles may also use DTC codes different from the generic DTC codes.

On 1999 and later P0903 engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.

If your vehicle is an older model with a non-electronic Transmission, you can check the distributor cap to see whether the spark is getting from there to the coil and on to the spark plugs.

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Don't forget ! If your P0903 engine code not resolved on and there are trouble codes in your computer, your vehicle will not pass an OBD 2 emissions test. The light must be off and there must be no codes in memory to pass an OBD 2 emissions test. In addition, all of the OBD II self-monitors that check for faults must have run and completed without finding any further problems to pass the test.

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