OBD Guide

P01B6

Alternative Fuel Rail Temperature Sensor Circuit Low

P01B6 is an OBD-II diagnostic trouble code meaning: Alternative Fuel Rail Temperature Sensor Circuit Low. Common causes: fuel rail temperature sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Unstable engine operation
  • Problems starting the engine
  • Reduced engine power
  • Increased fuel consumption

Causes

  • Fuel rail temperature sensor malfunction
  • Open or short circuit in wiring harness
  • Poor contact in sensor connectors
  • ECU malfunction

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Check the resistance of the fuel rail temperature sensor
  3. Replace sensor if necessary
  4. Check connections in connectors and clean contacts if necessary

Related codes

Error P01B6 by Vehicle Brand

FAQ

What does the P01B6 code mean?

P01B6 is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Rail Temperature Sensor Circuit Low

What causes a P01B6 error code?

The most common causes of P01B6 include: Fuel rail temperature sensor malfunction; Open or short circuit in wiring harness; Poor contact in sensor connectors; ECU malfunction.

How do I fix a P01B6 diagnostic trouble code?

To fix P01B6: Check the integrity of the sensor wiring harness. Check the resistance of the fuel rail temperature sensor. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P01B6?

Limited driving only, diagnose soon

How much does it cost to fix P01B6?

The estimated repair cost for P01B6 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat