Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the power that goes to one of the car's sensors. It's like when a toy doesn't have enough battery power to work properly.
The P16FE code indicates an issue with the voltage or performance of the power supply circuit for a specific sensor, labeled as 'C'.
The P16FE code is triggered when the Engine Control Module (ECM) detects a voltage level in the sensor power supply circuit 'C' that is outside the expected range. This could be due to a short, open circuit, or a faulty sensor affecting the circuit's performance.
• Check Engine Light is on
• Erratic engine performance
• Poor fuel economy
• Faulty sensor
• Damaged wiring or connectors
• Malfunctioning ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect wiring and connectors for damage.
• Test the sensor and power supply circuit for proper voltage.
• Replace or repair damaged wiring or connectors.
• Replace the faulty sensor.
• Update or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Chevrolet Malibu
• GMC Sierra
• Buick Encore
• Regularly inspect wiring and connectors.
• Ensure sensors are clean and functioning.
• Perform routine vehicle maintenance.
Sensor Issue
• Avoid driving long distances until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for warranty coverage on sensors and ECM.
This code has been associated with sensor power supply issues in various GM vehicles.
Moderate – Should be addressed soon to prevent further engine performance issues.
Driving with this code may lead to increased emissions and reduced fuel efficiency.
• Vehicle at operating temperature
• Engine running
The sensor power supply circuit 'C' is typically located in the engine bay, connected to the ECM and relevant sensors.
Q: Can I drive with a P16FE code?
A: It's not recommended to drive for long periods with this code, as it can affect engine performance.
Q: How do I clear a P16FE code?
A: After repairs, use an OBD-II scanner to clear the code, or disconnect the battery for a few minutes.
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