Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a sensor that helps control parts of the engine. This sensor isn't working right now, and it's like a broken toy that can't tell you what it's supposed to.
The engine control module (ECM) has detected a low voltage signal from the camshaft position actuator position sensor C on bank 1.
The P03E7 code indicates that the camshaft position actuator position sensor C circuit is reading a voltage lower than expected on bank 1. This sensor helps the ECM adjust the camshaft timing for optimal engine performance. A low circuit signal could mean a problem with the sensor itself, its wiring, or the ECM.
• Check Engine Light illuminated
• Poor engine performance
• Engine misfires
• Faulty camshaft position actuator position sensor
• Wiring issues such as shorts or open circuits
• Faulty ECM
ECM: Engine Control Module, the computer that controls engine functions.
Camshaft: A shaft in the engine that controls the opening and closing of the valves.
• Use an OBD-II scanner to verify the code
• Inspect the wiring and connectors for damage
• Test the camshaft position actuator position sensor
• Replace the camshaft position actuator position sensor
• Repair or replace damaged wiring
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Socket set
$150 - $400
Moderate
• Chevrolet Malibu
• GMC Terrain
• Buick Enclave
• Regular maintenance checks
• Ensure wiring is secure and intact
• Use quality replacement parts
Sensor Issue
• Get the vehicle checked by a professional mechanic
• Avoid driving long distances until the issue is resolved
Check with the vehicle manufacturer for warranty coverage on engine sensors.
This code has been associated with issues in vehicles with variable valve timing systems, particularly those with higher mileage.
Moderate – It may not cause immediate damage but should be addressed to avoid further engine issues.
Driving with this code may lead to increased emissions and reduced fuel efficiency.
• Engine at operating temperature
• Vehicle in park or neutral
The camshaft position actuator position sensor is typically located near the top of the engine, on the cylinder head.
Q: Can I drive with a P03E7 code?
A: It's not recommended to drive for long periods with this code, as it may affect engine performance.
Q: How can I reset the check engine light?
A: You can reset the light using an OBD-II scanner, but it's important to fix the underlying issue first.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.