OBD Guide

P01AD

Alternative Fuel Tank Temperature Sensor Circuit High

P01AD is an OBD-II diagnostic trouble code meaning: Alternative Fuel Tank Temperature Sensor Circuit High. Common causes: fuel temperature sensor circuit open, short circuit to power 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

  • Incorrect fuel temperature readings
  • Increased fuel consumption
  • Problems starting the engine
  • Check Engine Light Illuminates

Causes

  • Fuel temperature sensor circuit open
  • Short circuit to power in wiring harness
  • Fuel temperature sensor malfunction
  • Damaged or corroded connectors
  • Problems with the ECU

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Measure the resistance and voltage at the fuel temperature sensor
  3. Check for short circuit to power
  4. Replace the fuel temperature sensor if necessary
  5. Check and, if necessary, update the ECU software

Related codes

Error P01AD by Vehicle Brand

FAQ

What does the P01AD code mean?

P01AD is an OBD-II diagnostic trouble code that indicates: Alternative Fuel Tank Temperature Sensor Circuit High

What causes a P01AD error code?

The most common causes of P01AD include: Fuel temperature sensor circuit open; Short circuit to power in wiring harness; Fuel temperature sensor malfunction; Damaged or corroded connectors.

How do I fix a P01AD diagnostic trouble code?

To fix P01AD: Check the integrity of the wiring harness and connectors. Measure the resistance and voltage at the fuel temperature sensor. Check for short circuit to power. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P01AD?

Limited driving only, diagnose soon

How much does it cost to fix P01AD?

The estimated repair cost for P01AD is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat