Engine-CodesGMC – P1375 GMC

P1375 GMC Code - IC 24X Reference Circuit High Voltage

Quick Answer

The P1375 GMC diagnostic trouble code refers to the IC 24X Reference Circuit High Voltage. Common causes include Faulty wiring in the 24X reference circuit, Malfunctioning ignition control module, Issues with the engine's computer system. 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
P1375 GMC indicates IC 24X Reference Circuit High Voltage.
Common causes
Common causes include Faulty wiring in the 24X reference circuit, Malfunctioning ignition control module, Issues with the engine's computer system.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1375 GMC Description

The P1375 GMC diagnostic trouble code refers to the IC 24X Reference Circuit High Voltage. This code indicates that there is a high voltage condition detected in the 24X reference circuit for the ignition control module (IC). The ignition control module is a crucial component that controls the ignition timing and firing of the spark plugs in the engine. The 24X reference circuit provides a signal to the ignition control module to accurately time the ignition sequence.

OBDII Code P1375 GMC - IC 24X Reference Circuit High Voltage
P1375 GMC Code - IC 24X Reference Circuit High Voltage

Common Causes of P1375 GMC

  1. Faulty wiring in the 24X reference circuit
  2. Malfunctioning ignition control module
  3. Issues with the engine's computer system
  4. Corrosion or damage to electrical connections
  5. Exposure to moisture or water damage

Symptoms of P1375 GMC

  1. Engine misfires
  2. Rough idling or rough running engine
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Illumination of the check engine light

How to Fix P1375 GMC

  1. Begin by conducting a thorough inspection of the wiring in the 24X reference circuit to check for any damage, corrosion, or loose connections.
  2. Test the ignition control module to determine if it is functioning properly. If found faulty, replace the ignition control module with a new one.
  3. Check the engine's computer system for any error codes or issues that may be affecting the 24X reference circuit. Reset the codes and retest the system.
  4. Clear the diagnostic trouble codes from the vehicle's computer system using a scan tool.
  5. Test drive the vehicle to ensure that the issue has been resolved and that the symptoms associated with the P1375 code have been eliminated.

Cost to Fix P1375 GMC

The typical repair costs for addressing the IC 24X Reference Circuit High Voltage code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $100 to $300, while labor costs can range from $150 to $400. Overall, the total cost for resolving this issue can range from $250 to $700. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and labor rates at the auto repair shop. It's recommended to obtain a detailed quote from a trusted mechanic before proceeding with the repairs.

When is the Code Detected?

The P1375 code will also set if the 24X signal is shorted to voltage externally. If either condition is met DTC P1375 is set.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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