P0370 OBD II Trouble Code Timing Reference High Resolution Signal A Malfunction

How to diagnose, repair, and info on causes of a P0370 engine code which pertains to the timing refence high resolution A signal, or engine position sensor signal, which has malfunctioned. Also includes links to relevant forum topics on the code.

Symptoms of P0370 OBD II Trouble Code

  • Illuminate check engine light
  • Hard starting/no starting
  • Poor engine performance

Common Causes of P0370 OBD II Trouble Code

  • Faulty sensor
  • Wiring problems
  • Reluctor wheel damage
  • Contaminated oil
  • Faulty PCM

Severity of P0370 OBD II Trouble Code

The severity of these codes is moderate to severe. Symptoms of a P0370 engine code may include: