P0337 – OBD-II DTC

OBD-II DTC P0337 – Crankshaft Position Sensor A Circuit Range/Performance

DTC P0337 meaning

DTC P0337 refers to a problem with the Crankshaft Position Sensor A Circuit. This code indicates that the Engine Control Module (ECM) has detected a range or performance issue with the signal from the crankshaft position sensor. The crankshaft position sensor is crucial for determining the position of the crankshaft, which is essential for proper engine timing and fuel injection. When the ECM receives a signal that is outside the expected range, it triggers this diagnostic trouble code.

DTC P0337 symptoms

Common symptoms associated with DTC P0337 may include:

• Engine misfires
• Difficulty starting the engine
• Rough idling
• Loss of power during acceleration
• Check Engine Light illuminated

DTC P0337 causes

Several factors can lead to the triggering of DTC P0337, including:

• Faulty crankshaft position sensor
• Damaged wiring or connectors in the sensor circuit
• Faulty Engine Control Module (ECM)
• Improperly installed or misaligned sensor
• Mechanical issues such as a damaged crankshaft or timing components

DTC P0337 seriousness

DTC P0337 can be considered serious as it affects the engine’s ability to run smoothly and efficiently. If left unaddressed, it may lead to further engine damage, reduced fuel efficiency, and potential stalling. It is advisable to diagnose and repair the issue promptly to avoid more significant problems.

How to diagnose DTC P0337

To diagnose DTC P0337, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the crankshaft position sensor and its wiring for any visible damage.
3. Check the sensor’s connector for corrosion or loose connections.
4. Test the crankshaft position sensor’s resistance and voltage output using a multimeter.
5. Inspect the timing components for proper alignment and condition.
6. Clear the code and perform a test drive to see if the code returns.

How to fix DTC P0337 step-by-step instructions

To fix DTC P0337, follow these steps:

1. Disconnect the battery to ensure safety while working on the vehicle.
2. Inspect and repair any damaged wiring or connectors related to the crankshaft position sensor.
3. If the sensor is faulty, replace it with a new one.
4. Ensure the new sensor is properly aligned and installed according to manufacturer specifications.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Perform a test drive to verify that the issue has been resolved and the code does not return.

How to erase DTC P0337

To erase DTC P0337, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Access the scanner’s menu and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the engine to ensure the code does not reappear.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.