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P1375 Cadillac Code - IC 24X Reference Circuit High Voltage

Quick Answer

The P1375 Cadillac diagnostic trouble code (DTC) refers to the IC 24X Reference Circuit High Voltage. Common causes include Faulty ignition control module, Damaged wiring harness or connector in the IC 24X reference circuit, Malfunctioning crankshaft position sensor. 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 Cadillac indicates IC 24X Reference Circuit High Voltage.
Common causes
Common causes include Faulty ignition control module, Damaged wiring harness or connector in the IC 24X reference circuit, Malfunctioning crankshaft position sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P1375 Cadillac Description

The P1375 Cadillac diagnostic trouble code (DTC) refers to the IC 24X Reference Circuit High Voltage. This code indicates that the voltage on the 24X reference circuit for the ignition control module (IC) is higher than the specified parameters. The IC 24X reference circuit is an essential component in the ignition system of the vehicle, responsible for providing a reference signal to the ignition control module. When this voltage is higher than normal, it can lead to various performance issues and potentially cause long-term damage if not addressed promptly.

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

Common Causes of P1375 Cadillac

  1. Faulty ignition control module
  2. Damaged wiring harness or connector in the IC 24X reference circuit
  3. Malfunctioning crankshaft position sensor
  4. Problem with the powertrain control module (PCM)
  5. Electrical issues such as short circuits or corrosion in the wiring

Symptoms of P1375 Cadillac

  1. Check engine light illuminated
  2. Engine misfires or hesitation during acceleration
  3. Rough idling or stalling
  4. Decreased fuel efficiency
  5. Difficulty starting the engine

How to Fix P1375 Cadillac

  1. Begin by connecting a diagnostic scanner to the vehicle's onboard diagnostic port to retrieve the trouble codes and perform a comprehensive scan of the engine control module.
  2. Inspect the wiring harness and connectors in the IC 24X reference circuit for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components as needed.
  3. Test the ignition control module and crankshaft position sensor using a multimeter to check for proper voltage and continuity. Replace any faulty components.
  4. Clear the trouble codes from the engine control module's memory using the diagnostic scanner and test drive the vehicle to verify that the issue has been resolved.
  5. If the P1375 code persists, further diagnostics may be necessary to identify any underlying issues with the PCM or other related components.

Cost to Fix P1375 Cadillac

The cost of repairing the P1375 Cadillac code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the repair costs for this issue may range from $200 to $500, including parts and labor. However, it's important to note that the diagnosis time and labor rates can vary based on factors such as the vehicle's make and model, the location of the repair shop, and the complexity of the repair. It's advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate cost estimate for addressing the IC 24X Reference Circuit High Voltage issue in your Cadillac.

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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