P04B7
Fuel Fill Door Position Sensor/Switch Circuit Intermittent/Erratic
P04B7 is an OBD-II diagnostic trouble code meaning: Fuel Fill Door Position Sensor/Switch Circuit Intermittent/Erratic. Common causes: malfunction of the fuel tank cap position sensor, open or shorted wiring harness. Estimated repair cost: $22–89.
Symptoms
- The 'Check Engine' light is on
- EVAP system errors
- Problems with refueling (in some models)
- False warnings about an open tank cap
Causes
- Malfunction of the fuel tank cap position sensor
- Open or shorted wiring harness
- Oxidation or corrosion of contacts
- Problems with connectors
- Engine control unit malfunction
How to Fix
- Visual inspection of the sensor and wiring harness
- Check contacts for corrosion or damage
- Sensor Resistance Testing
- Checking the integrity of the wiring harness
- Replace the sensor if necessary
- Cleaning or repairing contacts
- Resetting the error code and checking the system
Related codes
Error P04B7 by Vehicle Brand
FAQ
What does the P04B7 code mean?
P04B7 is an OBD-II diagnostic trouble code that indicates: Fuel Fill Door Position Sensor/Switch Circuit Intermittent/Erratic
What causes a P04B7 error code?
The most common causes of P04B7 include: Malfunction of the fuel tank cap position sensor; Open or shorted wiring harness; Oxidation or corrosion of contacts; Problems with connectors.
How do I fix a P04B7 diagnostic trouble code?
To fix P04B7: Visual inspection of the sensor and wiring harness. Check contacts for corrosion or damage. Sensor Resistance Testing. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P04B7?
Yes, but get it checked soon
How much does it cost to fix P04B7?
The estimated repair cost for P04B7 is $22–89. Actual cost depends on your vehicle, location, and labor rates.
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