P0804 Code - 1-4 Upshift Skip Shift Lamp Control Circuit Malfunction

What does P0804 Mean?

OBD-II Code The shift lamp will not illuminated is defined as a Upshift/Skip Shift Lamp Control Circuit

The Shift Lamp is designed to alert the driver that the transmission needs to be put in a higher gear. If the lamp fails to operate as requested by the engine computer (PCM), code P0804 will be stored.

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What are the common causes of P0804 ?

The most common causes of this type of malfunction code being stored is due to a defective skip shift indicator lamp bulb, skip shift relay, skip shift solenoid, fuse, or actuator. Other possible causes include shorted, open, or corroded wiring and/or electrical connectors. The installation of an aftermarket skip shift eliminator may also cause this code to be stored.



How do you troubleshoot P0804 ?

You may need to replace or adjust your solenoid and then retest the system afterward to ensure a successful repair. If there is voltage present on the output circuit of the one through four skip shift solenoid, you should check your circuit continuity and resistance between the switch and the PCM. In extreme cases, you will have a defective PCM, but this is rare.

Searches related to P0804 Code - 1-4 Upshift Skip Shift Lamp Control Circuit Malfunction

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