AutoCodes – Chevrolet – P1375 Chevrolet

P1375 Chevrolet Code - IC 24X Reference Circuit High Voltage

Quick Answer

This diagnostic test checks for 24X signal at a logic high condition. Common causes include Faulty Ignition Control Module, Faulty Crankshaft Sensor, Crankshaft Sensor harness is open or shorted. 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 Chevrolet indicates IC 24X Reference Circuit High Voltage.
Common causes: Common causes include Faulty Ignition Control Module, Faulty Crankshaft Sensor, Crankshaft Sensor harness is open or shorted.
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 Popularity 5,530

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1375 Chevrolet Description

This diagnostic test checks for 24X signal at a logic high condition. The fault could be induced by the failure of either Crankshaft Position A or B Sensor input signal to the Ignition Control Module. Under such a condition, the Ignition Control Module would force the 24X signal high.

OBDII Code P1375 Chevrolet - IC 24X Reference Circuit High Voltage - AutoCodes.com — P1375 Chevrolet Code - IC 24X Reference Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1375 Chevrolet?

Faulty Ignition Control Module
Faulty Crankshaft Sensor
Crankshaft Sensor harness is open or shorted
Crankshaft Sensor circuit poor electrical connection

How to Fix the DTC P1375 Chevrolet?

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 P1375 Chevrolet 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 more information on how to fix the P1375 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1375 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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.

Frequently Asked Questions about P1375 Chevrolet Code

What does OBDII code P1375 mean for a Chevrolet vehicle?

P1375 indicates a problem with the IC 24X Reference Circuit, which has detected abnormally high voltage in the signal used by the ignition control system.

What are common symptoms of code P1375 in a Chevrolet?

Symptoms may include engine misfires, difficulty starting the vehicle, rough idle, reduced fuel efficiency, and the Check Engine Light illuminating.

What causes code P1375 to appear in a Chevrolet?

Common causes include a faulty ignition control module (ICM), damaged wiring or connectors in the 24X Reference Circuit, or a malfunctioning crankshaft position sensor.

Can code P1375 lead to serious engine issues?

Yes, if left unresolved, code P1375 can interfere with proper engine timing, potentially causing performance issues or damage to the engine components.

How do I diagnose code P1375 on a Chevrolet?

Start by inspecting the wiring and connectors for damage or corrosion, and test the ignition control module and crankshaft position sensor for proper functionality.

Can a bad ignition control module trigger code P1375?

Yes, a failing ignition control module is a common cause of code P1375, as it plays a key role in processing the 24X Reference Circuit signal.

How do I fix code P1375 in a Chevrolet?

Repairs may involve replacing the ignition control module, repairing or replacing damaged wiring, or installing a new crankshaft position sensor as needed.

Is code P1375 specific to certain Chevrolet models?

While P1375 is a generic code, it is commonly associated with Chevrolet vehicles equipped with specific ignition systems using the 24X Reference Circuit.

Can clearing the code fix P1375 permanently?

Clearing the code without addressing the underlying issue will only provide a temporary fix, and the code is likely to return until repairs are made.

Should I seek professional help for code P1375?

If you’re unfamiliar with diagnosing electrical systems or ignition components, it’s best to consult a qualified mechanic to ensure proper diagnosis and repair.