OBD Guide

P0371

Timing Reference High Resolution Signal A Too Many Pulses

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Poor engine idling
  • Misfires
  • Increased fuel consumption
  • Difficulty starting the engine
  • Check Engine Light Is On

Causes

  • Faulty crankshaft or camshaft position sensor
  • Damaged sensor wiring harness
  • Interference in the sensor circuit
  • Ignition module malfunction
  • Problems with the gear on the crankshaft

How to Fix

  1. Check the condition of the CKP/CMP sensor and its connections
  2. Inspect the wiring harness for damage
  3. Check the sensor signal using an oscilloscope
  4. Replace the sensor if a fault is found
  5. Clean or replace the gear if it is dirty or damaged

Related codes

Error P0371 by Vehicle Brand