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2022 BUICK ENCORE
1.4L Turbo I4•AWD•AUTOMATIC•gas•turbo
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Repairs0Labor483Torque2160Fluid10DTC2013Battery1Maintenance0Recalls0
P1374high severityPowertrain

3X Reference Circuit

on 2022 Buick Encore 1.4L Turbo I4 · AWD

What this code means

The PCM detects a fault in the 3X crankshaft reference signal used for timing. This affects ignition and fuel timing accuracy.

Symptoms

  • Hard starting
  • Engine stalling
  • Check engine light on

Common causes

  • Faulty crankshaft position sensor
  • Damaged reference circuit wiring
  • Corroded connector
  • Failed PCM input

Diagnostic steps

  1. Scan for reference codes
  2. Check 3X signal with scope or scan tool
  3. Inspect CKP sensor and wiring
  4. Test reference circuit continuity
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