OBD Guide

P2A5F

Alternative Fuel Tank B Level Sensor Circuit

P2A5F is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank B Level Sensor Circuit. Common causes: fuel level sensor b malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $17–56.

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

Symptoms

  • Incorrect fuel level readings in the additional tank
  • Low fuel indicator is constantly on
  • Lack of fuel level readings from the additional tank
  • Floating fuel level readings
  • Check Engine Light Illuminates

Causes

  • Fuel level sensor B malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in sensor connectors
  • Corroded contacts or damaged wiring
  • Fuel system ECU malfunction

How to Fix

  1. Check the integrity of the sensor wiring and connectors
  2. Test the resistance of the fuel level sensor
  3. Check the voltage and signal in the sensor circuit
  4. Replace the faulty fuel level sensor if necessary
  5. Clean or replace corroded connectors

Related codes

Error P2A5F by Vehicle Brand

FAQ

What does the P2A5F code mean?

P2A5F is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank B Level Sensor Circuit

What causes a P2A5F error code?

The most common causes of P2A5F include: Fuel level sensor B malfunction; Open or short circuit in the sensor circuit; Poor contact in sensor connectors; Corroded contacts or damaged wiring.

How do I fix a P2A5F diagnostic trouble code?

To fix P2A5F: Check the integrity of the sensor wiring and connectors. Test the resistance of the fuel level sensor. Check the voltage and signal in the sensor circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P2A5F?

Yes, but get it checked soon

How much does it cost to fix P2A5F?

The estimated repair cost for P2A5F is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat