OBD Guide

P04CA

Fuel Fill Door Open Request Sensor/Switch Circuit Low

P04CA is an OBD-II diagnostic trouble code meaning: Fuel Fill Door Open Request Sensor/Switch Circuit Low. Common causes: malfunction of the fuel hatch opening request sensor, open or short circuit in wiring harness. Estimated repair cost: $22–89.

Severity
Low
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Check Engine Light Is On
  • Problems opening the fuel hatch
  • Errors in the EVAP system

Causes

  • Malfunction of the fuel hatch opening request sensor
  • Open or short circuit in wiring harness
  • Poor contact in connectors
  • Problems with the control unit

How to Fix

  1. Check the sensor and its connections
  2. Check the integrity of the wiring harness
  3. Check the voltage in the circuit
  4. If necessary, replace the sensor or repair the wiring harness

Related codes

Error P04CA by Vehicle Brand

FAQ

What does the P04CA code mean?

P04CA is an OBD-II diagnostic trouble code that indicates: Fuel Fill Door Open Request Sensor/Switch Circuit Low

What causes a P04CA error code?

The most common causes of P04CA include: Malfunction of the fuel hatch opening request sensor; Open or short circuit in wiring harness; Poor contact in connectors; Problems with the control unit.

How do I fix a P04CA diagnostic trouble code?

To fix P04CA: Check the sensor and its connections. Check the integrity of the wiring harness. Check the voltage in the circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P04CA?

Yes, but get it checked soon

How much does it cost to fix P04CA?

The estimated repair cost for P04CA is $22–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat