Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble getting a consistent reading from the sensor that measures the temperature of the alternative fuel tank. It's like when a thermometer keeps changing its reading even though the temperature is the same.
The P01AE code is triggered when the engine control module (ECM) detects an intermittent or erratic signal from the alternative fuel tank temperature sensor.
The alternative fuel tank temperature sensor monitors the temperature of the fuel in the alternative fuel tank. This information is used by the ECM to adjust fuel delivery and ensure optimal performance. An intermittent or erratic circuit signal indicates a problem with the sensor, wiring, or connections.
• Check Engine Light is on
• Erratic fuel gauge readings
• Possible decrease in fuel efficiency
• Faulty alternative fuel tank temperature sensor
• Damaged or corroded wiring/connectors
• Poor electrical connection in the sensor circuit
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the alternative fuel tank temperature sensor for proper operation.
• Replace the faulty temperature sensor.
• Repair or replace damaged wiring/connectors.
• Ensure all connections are secure and corrosion-free.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Chevrolet Volt
• Toyota Prius
• Nissan Leaf
• Regularly inspect wiring for damage.
• Keep connectors clean and corrosion-free.
• Schedule routine maintenance checks.
Sensor Issue
• Address the issue promptly to avoid potential performance problems.
• Consult a professional mechanic if unsure about the diagnosis.
Check with the vehicle manufacturer for specific warranty coverage related to sensors.
This code has been more common in hybrid and alternative fuel vehicles due to their specific sensor requirements.
Moderate – It is advisable to address this issue soon to prevent further complications.
Ignoring this code may lead to decreased fuel efficiency and potential engine performance issues.
• Vehicle at operating temperature
• Stable ambient temperature
The alternative fuel tank temperature sensor is typically located near or on the alternative fuel tank.
Q: Can I drive with the P01AE code?
A: While you can drive with this code, it is not recommended as it may affect fuel efficiency and engine performance.
Q: How do I clear the P01AE code?
A: After repairing the issue, use an OBD-II scanner to clear the code from the vehicle's computer.
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