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 figuring out if the engine is misfiring because the flywheel, a part that helps the engine run smoothly, isn't working right.
The engine control module (ECM) uses the flywheel to detect misfires by monitoring the engine's rotation. If the flywheel's adaptation is out of range, it can't accurately detect misfires.
The P1320 code indicates that the ECM has detected an issue with the flywheel's adaptation parameters, which are used to detect engine misfires. This can affect the engine's performance and emissions.
• Check Engine Light is on
• Rough engine idle
• Poor acceleration
• Faulty flywheel
• Damaged crankshaft position sensor
• ECM software issue
Flywheel: A heavy wheel attached to the engine's crankshaft to help keep the engine running smoothly.
ECM: Engine Control Module, the computer that controls engine functions.
• Check for any other related codes and address them first.
• Inspect the flywheel for physical damage.
• Test the crankshaft position sensor for proper operation.
• Replace the flywheel if damaged.
• Repair or replace the crankshaft position sensor.
• Update the ECM software if needed.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Nissan Maxima
• Infiniti QX4
• Nissan Pathfinder
• Regular maintenance checks
• Ensure proper engine tuning
• Update ECM software regularly
Engine Performance
• Do not ignore the Check Engine Light.
• Seek professional diagnosis if unsure.
• Regularly service your vehicle to prevent such issues.
Check with the vehicle manufacturer for warranty coverage on the ECM and related components.
This code has been more common in certain Nissan and Infiniti models due to specific flywheel and sensor configurations.
Moderate – It is important to address this issue to prevent further engine damage and ensure optimal performance.
Ignoring this code may lead to increased emissions and potential engine damage, which could affect vehicle safety and compliance with emissions regulations.
• Engine at operating temperature
• Vehicle stationary
The flywheel is located between the engine and the transmission, bolted to the engine's crankshaft.
Q: Can I drive with a P1320 code?
A: It's not recommended to drive for extended periods with this code, as it may lead to engine damage.
Q: How can I reset the P1320 code?
A: You can reset the code with an OBD-II scanner, but it's important to fix the underlying issue first.
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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.