P1374 Code - 3X Reference Circuit
Quick Answer
The P1374 code refers to a fault in the 3X reference circuit in the vehicle's engine control module (ECM). Common causes include Wiring harness issues, Faulty crankshaft position sensor, Defective ECM. 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 Wiring harness issues, Faulty crankshaft position sensor, Defective ECM.
- 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.
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Code P1374 Description
The P1374 code refers to a fault in the 3X reference circuit in the vehicle's engine control module (ECM). The 3X reference circuit is responsible for providing the ECM with a signal that represents the position of the crankshaft. This information is crucial for the ECM to accurately control the ignition timing and fuel injection timing. When this circuit malfunctions, it can lead to significant performance issues in the vehicle.
Common Causes of P1374
- Wiring harness issues
- Faulty crankshaft position sensor
- Defective ECM
- Circuit malfunction
Symptoms of P1374
- Engine misfires
- Rough idling or running
- Stalling
- Reduced engine power
- Difficulty starting the vehicle
How to Fix P1374
- Diagnose the issue using a diagnostic scanner to retrieve the fault codes and data related to the 3X reference circuit.
- Inspect the wiring harness for any signs of damage, corrosion, or loose connections. Repair or replace any faulty wiring as needed.
- Test the crankshaft position sensor for proper operation. Replace it if necessary.
- Check the ECM for any faults or malfunctions. Repair or replace the ECM if it is found to be defective.
- Clear the fault codes from the ECM's memory, reset the system, and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1374
The cost of repairing a P1374 code can vary depending on the exact cause of the issue and the extent of the repairs needed. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. However, it's important to note that labor rates at auto repair shops can range from $80 to $150 per hour, and rates may be higher at dealerships or in metropolitan areas. It's recommended to get a specific estimate from a local auto repair shop to determine the exact cost for your vehicle.
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Code P1374 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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