OBD Guide

P01AB

Alternative Fuel Tank Temperature Sensor Range/Performance

P01AB is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank Temperature Sensor Range/Performance. Common causes: fuel tank 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
  • Increased fuel consumption
  • Difficulty starting the engine
  • Check Engine Light Illuminates

Causes

  • Fuel tank temperature sensor malfunction
  • Open or short circuit in wiring harness
  • Poor contact in the sensor connector
  • Problems with the ECU

How to Fix

  1. Check the temperature sensor readings using a diagnostic scanner
  2. Inspect the sensor wiring harness and connectors for damage.
  3. Replace temperature sensor if necessary
  4. Clean or replace connectors if corroded

Related codes

Error P01AB by Vehicle Brand

FAQ

What does the P01AB code mean?

P01AB is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank Temperature Sensor Range/Performance

What causes a P01AB error code?

The most common causes of P01AB include: Fuel tank temperature sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; Problems with the ECU.

How do I fix a P01AB diagnostic trouble code?

To fix P01AB: Check the temperature sensor readings using a diagnostic scanner. Inspect the sensor wiring harness and connectors for damage.. Replace temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P01AB?

Limited driving only, diagnose soon

How much does it cost to fix P01AB?

The estimated repair cost for P01AB is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat