P1374 Code - 3X Reference Circuit
Quick Answer
The 3X reference signal is produced by the Ignition Control Module (ICM). Common causes include Faulty Crankshaft Position (CKP) Sensor, Crankshaft Position (CKP) Sensor harness is open or shorted, Crankshaft Position (CKP) Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1374 indicates 3X Reference Circuit.
- Common causes
- Common causes include Faulty Crankshaft Position (CKP) Sensor, Crankshaft Position (CKP) Sensor harness is open or shorted, Crankshaft Position (CKP) Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1374 Description
- 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
What are the Possible Causes of the DTC P1374?
- 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
How to Fix the DTC P1374?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1374 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Need Help with the Code?
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Information for Specific Makes
- P1374 Audi — Cylinder 7 Ignition Circuit Short To B+
- P1374 Buick — 3X Reference Circuit
- P1374 Cadillac — 3X Reference Circuit
- P1374 Chevrolet — 3X Reference Circuit
- P1374 GMC — 3X Reference Circuit
- P1374 Jaguar — Ignition Coil Cylinder 4 Early Activation
- P1374 Volkswagen — Cylinder 7 Ignition Circuit Short To B+
Frequently Asked Questions about P1374 Code
No Frequently Asked Questions about P1374 Code found.
Discuss the causes and fixes for P1374 OBDII Code
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replaced crank sensor and the icm tested ok still getting the p1374 code it starts up after about 5 sec of cranking and runs good have good spark at ignition coils
need help
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