Error code
OBD2 P0804
OBD2P0804
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
1-4 Upshift (Skip Shift) Lamp Control Circuit.
Severity
moderateCan drive, but may experience transmission issues if not addressed.
Summary
P0804 indicates an issue with the circuit controlling the 1-4 upshift (skip shift) warning lamp, which alerts the driver when the transmission is not shifting properly.
Symptoms
- Warning light for 1-4 upshift malfunctioning
Common Causes
- Wiring issues
- Poor connection in the circuit
Fixes
- Inspect and repair wiring or connections related to the upshift warning lamp circuit.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0800Transfer Case Control System (MIL Request)
- P0801Reverse Inhibit Control Circuit
- P0802Transmission Control System MIL Request Circuit/Open
- P08031-4 Upshift (Skip Shift) Solenoid Control Circuit
- P0805Clutch Position Sensor Circuit
- P0806Clutch Position Sensor Circuit Range/Performance
- P0807Clutch Position Sensor Circuit Low
- P0808Clutch Position Sensor Circuit High
- P0809Clutch Position Sensor Circuit Intermittent
- P0810Clutch Position Control Error
- P0811Excessive Clutch Slippage
- P0812Reverse Input Circuit