P01B1

Alternative Fuel Tank A Level Sensor Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect fuel level readings on the dashboard
Check engine light comes on
Problems starting the engine
Unstable engine operation

Causes

Malfunction of the fuel level sensor in the alternative tank
Open or short circuit in wiring harness
Poor connection or corroded contacts
ECU malfunction

How to Fix

Check the fuel level sensor for damage
Check wiring harness and connections for breaks or corrosion.
Measure the sensor resistance and compare with factory values
If necessary, replace the sensor or repair the wiring harness
Reset the error and check if it returns

Related codes

P01B0 P01B2 P0460 P0461