Error code

OBD2 P0337

OBD2P0337
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Crankshaft Position Sensor 'A' Circuit Low.

Severity

moderateThe vehicle may be drivable but with reduced performance and potential starting issues.

Summary

P0337 indicates that the crankshaft position sensor 'A' is providing a low input signal to the engine control module (ECM). This can affect engine timing and performance.

Symptoms

  • Poor fuel economy
  • Engine cranks but won't start or starts with difficulty
  • Lack of engine power
  • Poor acceleration
  • Engine misfire
  • Engine stalling

Common Causes

  • Dead crankshaft position sensor (CKP)
  • Poorly aligned CKP sensor
  • Starting problems due to a dead battery or defective starter
  • Electrical issues such as open or short circuits in the wiring harness

Diagnosis

  1. Check battery condition and starter functionality
  2. Inspect CKP sensor alignment and wiring harness for damage or corrosion
  3. Use a digital multimeter to check the signal from the CKP sensor while cranking the engine

Fixes

  • Replace faulty crankshaft position sensor if necessary

FAQ

Can I drive with P0337?

You can likely drive the vehicle, but it may experience reduced performance and starting issues.

What causes a low input signal from the crankshaft position sensor?

Common causes include a faulty sensor, poor alignment of the sensor, electrical problems in the wiring harness, or issues with the battery or starter.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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