P01B5

Alternative Fuel Rail Temperature Sensor Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Unstable idle
Reduced engine power
Increased fuel consumption
Problems starting the engine

Causes

Faulty fuel rail temperature sensor
Broken or damaged wiring harness
Short circuit in the sensor circuit
Poor contact in the sensor connector
ECU problems

How to Fix

Check the condition of the wiring harness and connectors
Check sensor readings using an OBD-II scanner
Replace the fuel rail temperature sensor if necessary
Clean or replace damaged wires
Check and update ECU software

Related codes

P01B6 P01B7 P0180 P0181