P2A4F

Alternative Fuel Temperature Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine operation
Increased fuel consumption
Check Engine Light Illuminates
Problems when switching between fuel types
Reduced engine power

Causes

Alternate fuel temperature sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Contact corrosion
Problems with the engine control unit

How to Fix

Check the integrity of the sensor circuit
Inspect connectors and contacts for damage
Check sensor resistance
Replace the alternative fuel temperature sensor if necessary
Reset the error code and check if it returns

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