P01B3

Alternative Fuel Tank A Level Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Inaccurate fuel level readings
Fuel gauge needle jumps
Check engine light comes on

Causes

Malfunction of the fuel level sensor (circuit A)
Wiring harness damage
Poor connection or corrosion in connectors
Circuit Grounding Problems
Malfunction of the engine control unit (ECU)

How to Fix

Check the condition of the wiring harness and connectors of the fuel level sensor
Check the resistance of the fuel level sensor (circuit A) according to the manufacturer's specifications
Check circuit continuity and grounding
Check/replace fuel level sensor (circuit A) if necessary
Clear error codes and check if the error appears again

Related codes

P01B4 P0461 P0462