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 isn't getting a message it expects from a part that helps control the engine's valves. It's like when you're waiting for a text from a friend, but it never comes.
The vehicle's computer expects to receive data from the Variable Valve Lift (VVL) system through the Controller Area Network (CAN). This code indicates a timeout, meaning the expected message was not received in time.
P1037 is set when the Engine Control Module (ECM) does not receive the expected Variable Valve Timing (VVT) message from the VVL system on Bank 1 within a specified time frame via the CAN bus. This can indicate a communication issue or a fault in the VVL system.
• Check Engine Light is on
• Poor engine performance
• Reduced fuel efficiency
• Faulty VVL actuator
• Wiring issues in the CAN bus
• Faulty ECM
VVL: Variable Valve Lift
CAN: Controller Area Network
VVT: Variable Valve Timing
ECM: Engine Control Module
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors of the VVL system.
• Check the CAN bus for communication errors.
• Repair or replace faulty wiring or connectors.
• Replace the VVL actuator if faulty.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Diagnostic software
$200 - $800
Moderate
• Nissan Altima
• Infiniti G35
• Nissan Maxima
• Regular maintenance checks
• Ensure proper electrical connections
• Use quality engine oil
Communication Issue
• Consult a professional mechanic if unsure.
• Do not ignore the Check Engine Light.
• Regularly check for software updates for your vehicle.
Check with your vehicle manufacturer for warranty coverage on the ECM and related components.
This code has been associated with communication issues in vehicles with advanced valve timing systems.
Moderate – It should be addressed soon to prevent further engine performance issues.
Driving with a malfunctioning VVL system can lead to increased emissions and reduced performance. Addressing the issue promptly is recommended.
• Engine running
• Vehicle in a safe, stationary position
The VVL actuator is typically located on the engine, near the cylinder head of Bank 1.
Q: What does Bank 1 mean?
A: Bank 1 refers to the side of the engine with cylinder 1.
Q: Can I drive with a P1037 code?
A: It's possible, but not recommended as it can lead to poor performance and increased emissions.
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