OBD Guide

P04C7

Fuel Fill Door Lock Position Sensor/Switch Circuit Intermittent/Erratic

P04C7 is an OBD-II diagnostic trouble code meaning: Fuel Fill Door Lock Position Sensor/Switch Circuit Intermittent/Erratic. Common causes: open or short circuit in wiring harness, lock position sensor malfunction. Estimated repair cost: $22–56.

Severity
Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Problems with opening/closing the fuel filler flap
  • The error may appear and disappear

Causes

  • Open or short circuit in wiring harness
  • Lock position sensor malfunction
  • Contact corrosion
  • Problems with the fuel filler door lock

How to Fix

  1. Check wiring harness for damage
  2. Check sensor contacts for oxidation
  3. Test the lock position sensor
  4. Replace sensor or lock if necessary

Related codes

Error P04C7 by Vehicle Brand

FAQ

What does the P04C7 code mean?

P04C7 is an OBD-II diagnostic trouble code that indicates: Fuel Fill Door Lock Position Sensor/Switch Circuit Intermittent/Erratic

What causes a P04C7 error code?

The most common causes of P04C7 include: Open or short circuit in wiring harness; Lock position sensor malfunction; Contact corrosion; Problems with the fuel filler door lock.

How do I fix a P04C7 diagnostic trouble code?

To fix P04C7: Check wiring harness for damage. Check sensor contacts for oxidation. Test the lock position sensor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P04C7?

Yes, but get it checked soon

How much does it cost to fix P04C7?

The estimated repair cost for P04C7 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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