P2A59

Alternative Fuel Vaporizer B Outlet Temperature Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–67 (est.)

Symptoms

Unstable operation of the engine using alternative fuel
Increased fuel consumption
Check Engine Light Is On
Reduced engine power
Dips during acceleration

Causes

Evaporator temperature sensor malfunction
Open or short circuit in the sensor circuit
Oxidation of sensor connector contacts
Problems with the engine control unit
Mechanical damage to wiring

How to Fix

Check the integrity of the sensor circuit
Clean the contacts of the sensor connector
Check sensor resistance (compare with specifications)
Replace evaporator temperature sensor if necessary
Flash the control unit in case of repeated errors

Related codes

P2A58 P2A5A P2A5B