P01AE
Alternative Fuel Tank Temperature Sensor Circuit Intermittent/Erratic
Generic OBD-II
Common symptoms
What you'll notice
- Check and clean the fuel tank temperature sensor connections
- Inspect and replace the fuel tank temperature sensor if necessary
- Test and replace the engine coolant temperature sensor
- Inspect and repair any damaged or corroded wiring related to the fuel tank temperature sensor
Common causes
Most likely first
- Faulty alternative fuel tank temperature sensor
- Loose or damaged wiring connectors or harnesses
- Poor electrical connection or corroded terminals
- Faulty engine control module (ECM) or powertrain control module (PCM)
- Malfunctioning fuel temperature sensor
How to diagnose & fix
Work through it in order
- Engine misfires or runs rough
- Decreased fuel efficiency
- Difficulty starting the vehicle
- Check Engine Light consistently illuminates
- Inconsistent fuel gauge readings
Read & clear P01AE yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.