OBD Guide
ENFRDEESPT

P1374

3X Reference Circuit

P1374 is an OBD-II diagnostic trouble code meaning: 3X Reference Circuit. Common causes: malfunction of the crankshaft position sensor, open or short circuit in wiring. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Unstable engine operation
  • Difficulty starting the engine
  • Power dips during acceleration
  • Increased fuel consumption
  • Check Engine Light Is On

Causes

  • Malfunction of the crankshaft position sensor
  • Open or short circuit in wiring
  • Oxidized or damaged connector contacts
  • Mechanical damage to the drive disk
  • Problems with the engine ECU

How to Fix

  1. Check the condition of the crankshaft position sensor
  2. Inspect the 3X signal circuit for damage.
  3. Check the contacts of the sensor and ECU connectors
  4. Test the sensor signal with an oscilloscope
  5. If necessary, replace the sensor or repair the wiring

Related codes

P0335P0336P1370

Error P1374 by Vehicle Brand

BuickCadillacChevroletChryslerGMGMCJaguarOldsmobileSaturnVolkswagen

FAQ

What does the P1374 code mean?

P1374 is an OBD-II diagnostic trouble code that indicates: 3X Reference Circuit

What causes a P1374 error code?

The most common causes of P1374 include: Malfunction of the crankshaft position sensor; Open or short circuit in wiring; Oxidized or damaged connector contacts; Mechanical damage to the drive disk.

How do I fix a P1374 diagnostic trouble code?

To fix P1374: Check the condition of the crankshaft position sensor. Inspect the 3X signal circuit for damage.. Check the contacts of the sensor and ECU connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1374?

Limited driving only, diagnose soon

How much does it cost to fix P1374?

The estimated repair cost for P1374 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat