OBD Guide
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P1456

Fuel Tank Temperature Sensor Circuit Malfunction

P1456 is an OBD-II diagnostic trouble code meaning: Fuel Tank Temperature Sensor Circuit Malfunction. Common causes: open or short circuit in the sensor circuit, fuel tank temperature sensor malfunction. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine Light Is On
  • Increased fuel consumption
  • Problems starting the engine
  • Unstable engine operation at idle

Causes

  • Open or short circuit in the sensor circuit
  • Fuel tank temperature sensor malfunction
  • Wiring harness damage
  • Problems with sensor connectors
  • ECU malfunction

How to Fix

  1. Check the integrity of the sensor circuit
  2. Check the resistance of the fuel tank temperature sensor
  3. Inspect connectors and wiring harness for damage
  4. Replace the fuel tank temperature sensor if necessary
  5. Check and, if necessary, replace the computer

Related codes

P0451P0452P0453

Error P1456 by Vehicle Brand

AcuraBMWHondaInfinitiMazdaVolkswagen

FAQ

What does the P1456 code mean?

P1456 is an OBD-II diagnostic trouble code that indicates: Fuel Tank Temperature Sensor Circuit Malfunction

What causes a P1456 error code?

The most common causes of P1456 include: Open or short circuit in the sensor circuit; Fuel tank temperature sensor malfunction; Wiring harness damage; Problems with sensor connectors.

How do I fix a P1456 diagnostic trouble code?

To fix P1456: Check the integrity of the sensor circuit. Check the resistance of the fuel tank temperature sensor. Inspect connectors and wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1456?

Yes, but get it checked soon

How much does it cost to fix P1456?

The estimated repair cost for P1456 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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