What does P0337 mean?
The crankshaft position (CKP) sensor reads a toothed wheel on the crankshaft. The computer uses it for engine speed, spark and injection timing. Without it, most engines will not run.
The signal is below the expected range, usually a wiring or sensor fault.
Codes are a starting point. They tell you which test failed, not which part to replace. Check for other stored codes and fix those in a sensible order.
Symptoms
- Engine cranks but will not start
- Stalling, often when hot
- Intermittent loss of tach signal
- Misfires or rough running
Common causes
- Signal wire shorted to ground
- Damaged sensor
- Unplugged or corroded connector
How to diagnose P0337
- Inspect the connector and harness.
- Check the signal and its ground with a meter or scope.
- Test or replace the sensor once the wiring checks good.
- Check whether the tachometer moves while cranking. No movement often means no CKP signal.
- Inspect the sensor and connector for oil, damage and debris.
How to fix it
- Replace the crankshaft position sensor
- Repair wiring
- Repair the tone wheel
Estimated repair cost
Likely repairs for P0337 run from about $100 to $400, depending on the cause.
| Repair | Typical range (parts + labor) |
|---|---|
| Diagnostic fee (scan + testing) | $100 - $200 |
| Crankshaft position sensor | $120 - $350 |
| Wiring/connector repair | $100 - $400 |
These are rough US estimates for an independent shop in 2026, based on typical parts prices and standard labor times. Dealers, big trucks, luxury brands and high-cost areas often run higher. They are not quotes. Use the repair cost estimator to adjust for your vehicle.
How serious is P0337?
High severity
Not recommended. A failing crank sensor can kill the engine while you are driving.
P0337 FAQ
What does P0337 mean?
P0337 stands for "Crankshaft Position Sensor "A" Circuit Low". The crankshaft position (CKP) sensor reads a toothed wheel on the crankshaft.
Can I drive with a P0337 code?
Not recommended. A failing crank sensor can kill the engine while you are driving.
How much does it cost to fix P0337?
It depends on the cause. The likely repairs for P0337 range from about $100 to $400 at an independent shop in the US, plus a diagnostic fee of roughly $100-$200. These are rough estimates; dealer prices and some vehicles run higher.
What is the most common cause of P0337?
The most common causes are: signal wire shorted to ground; damaged sensor; unplugged or corroded connector.