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AutoCodes - Generic - P1374

P1374 Code - 3X Reference Circuit

- Code Popularity: 27,775 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P1374?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Crankshaft Position (CKP) Sensor
  • Crankshaft Position (CKP) Sensor harness is open or shorted
  • Crankshaft Position (CKP) Sensor circuit poor electrical connection
  • Faulty Ignition Control Module
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How to Fix the DTC P1374?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1374 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1374 Description

The 3X reference signal is produced by the Ignition Control Module (ICM). The ICM calculates the 3X reference signal by dividing the Crankshaft Position (CKP) sensor 18X pulses by 3. This calculation is performed while the engine is running, and while the CKP sync pulses are being received. The Powertrain Control Module (PCM) uses the following information:
- The 3X reference signal in order to calculate the engine RPM, and the CKP at engine speeds above 1,200 RPM
- The pulses on the circuit in order to initiate injector pulses
- A constant monitoring of the number of pulses on the 3X reference circuit
- A comparison to the number of 3X reference pulses to the number of 18 X reference pulses and CAM signal pulses being received

OBDII Code P1374 - 3X Reference Circuit - AutoCodes.com
P1374 Code - 3X Reference Circuit

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Code P1374 comments

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