AutoCodes – Chevrolet – P1792 Chevrolet

P1792 Chevrolet Code - ECM to TCM Engine Coolant Signal

Quick Answer

With the key on or engine running, the Powertrain Control Module (PCM) detects that the Engine Coolant Temperature (ECT) sensor signal was below the lower or over the upper limit, or that the ECT signal was unreliable, conditions met for one second. Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature (ECT) sensor harness is open or shorted, Engine Coolant Temperature (ECT) 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: P1792 Chevrolet indicates ECM to TCM Engine Coolant Signal.
Common causes: Common causes include Faulty Engine Coolant Temperature (ECT) sensor, Engine Coolant Temperature (ECT) sensor harness is open or shorted, Engine Coolant Temperature (ECT) 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.

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Code Popularity 4,963

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 19, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1792 Chevrolet Description

OBDII Code P1792 Chevrolet - ECM to TCM Engine Coolant Signal - AutoCodes.com — P1792 Chevrolet Code - ECM to TCM Engine Coolant Signal

What does this mean?

What are the Possible Causes of the DTC P1792 Chevrolet?

Faulty Engine Coolant Temperature (ECT) sensor
Engine Coolant Temperature (ECT) sensor harness is open or shorted
Engine Coolant Temperature (ECT) sensor circuit poor electrical connection

How to Fix the DTC P1792 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 P1792 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.

Need more information about the P1792 Chevrolet code?

Need more information on how to fix the P1792 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1792 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 P1792 Chevrolet Code

1. What are the common symptoms of OBDII code P1792 in a Chevrolet related to the ECM to TCM Engine Coolant Signal?

- Common symptoms include engine overheating, erratic shifting of gears, transmission slipping, and illuminated warning lights on the dashboard.

2. What could cause the OBDII code P1792 in a Chevrolet to appear?

- The code P1792 can be triggered by issues such as a faulty engine coolant temperature sensor, damaged wiring or connectors between the ECM and TCM, or a malfunctioning ECM or TCM.

3. How serious is the OBDII code P1792 related to the ECM to TCM Engine Coolant Signal in a Chevrolet?

- Ignoring the P1792 code can lead to further damage to the engine and transmission components, potentially resulting in costly repairs down the line.

4. How can I diagnose the OBDII code P1792 in my Chevrolet?

- Diagnosing the P1792 code typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the engine coolant temperature sensor, and checking the wiring connections between the ECM and TCM.

5. What are some general repair tips for addressing the OBDII code P1792 in a Chevrolet?

- Repair tips may include replacing the engine coolant temperature sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM and TCM to ensure proper communication.

6. Can I drive my Chevrolet with the OBDII code P1792 present?

- It is not recommended to drive your Chevrolet with the P1792 code active, as it can lead to drivability issues and potential damage to the engine and transmission components.

7. How much does it typically cost to repair the OBDII code P1792 in a Chevrolet?

- The cost of repairing the P1792 code can vary depending on the specific cause of the issue, but it may range from a few hundred dollars for sensor replacement to over a thousand dollars for more extensive repairs.

8. Are there any preventive measures to avoid the OBDII code P1792 in a Chevrolet?

- Regular maintenance, such as checking and replacing the engine coolant temperature sensor as needed, can help prevent issues that may trigger the P1792 code in a Chevrolet.

9. Can a DIY enthusiast address the OBDII code P1792 in a Chevrolet?

- While some basic troubleshooting steps can be performed by DIY enthusiasts, diagnosing and repairing the P1792 code may require specialized tools and expertise, so professional help is often recommended.

10. How long does it take to repair the OBDII code P1792 in a Chevrolet?

- The repair time for the P1792 code can vary based on the specific cause of the issue and the extent of the repairs needed, but it may take anywhere from a few hours to a full day at a repair shop.