P0804 OBD-II: Upshift/Skip Shift Lamp Control Circuit

P0804 Severity

Moderate

Will P0804 go away on its own?

Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.

For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.

Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.

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P0804 Summary Find a Repair Shop P0804 Details Ask RepairPal CarGenius Other OBD-II Codes

What causes OBD-II fault code P0804?

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.

OBD II Fault Code

OBD II P0804

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

The shift lamp will not illuminated Symptoms

The shift lamp will not illuminated

Common Problems That Trigger the P0804 Code

Instrument cluster failure
Shift lamp bulb failure
Wiring issue

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Other OBD-II Codes

P0803: Upshift/Skip Shift Solenoid Control Circuit P0802: Transmission Control System MIL Request Circuit/Open P0801: Reverse Inhibit Control Circuit P0800: Transfer Case Control System (MIL Request)P0805: Clutch Position Sensor Circuit P0806: Clutch Position Sensor Circuit Range/Performance P0807: Clutch Position Sensor Circuit Low P0808: Clutch Position Sensor Circuit High P0809: Clutch Position Sensor Circuit Intermittent P080A: Clutch Position not Learned P080B: Upshift/Skip Shift Solenoid Control Circuit Range/Performance P080C: Upshift/Skip Shift Solenoid Control Circuit Low P080D: Upshift/Skip Shift Solenoid Control Circuit High P0810: Clutch Position Control Error P0811: Excessive Clutch "A" Slippage P0812: Reverse Input Circuit P0813: Reverse Output Circuit P0814: Transmission Range Display Circuit P0815: Upshift Switch Circuit P0816: Downshift Switch Circuit P0817: Starter Disable Circuit/Open P0818: Driveline Disconnect Switch Input Circuit P0819: Up and Down Shift Switch to Transmission Range Correlation P081A: Starter Disable Circuit Low

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