OBD Guide

P2A4E

Alternative Fuel Temperature Sensor Circuit High

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

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation
  • Problems starting the engine

Causes

  • Alternate fuel temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with the engine ECU
  • Corroded contacts or damaged wiring

How to Fix

  1. Check the continuity of the temperature sensor circuit
  2. Inspect connectors and contacts for corrosion
  3. Check the resistance of the temperature sensor
  4. Replace the alternative fuel temperature sensor if necessary
  5. Reset the error code and check for its reappearance

Related codes

Error P2A4E by Vehicle Brand