AutoCodes – Cadillac – P1692 Cadillac

P1692 Cadillac Code - Coolant Gauge Circuit High Voltage

Quick Answer

With the key on, and the Powertrain Control Module (PCM) detects an open, short-to-ground or short-to-voltage condition in the Coolant Gauge Circuit. Common causes include Faulty Coolant Gauge, Coolant Gauge harness is open or shorted, Coolant Gauge 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: P1692 Cadillac indicates Coolant Gauge Circuit High Voltage.
Common causes: Common causes include Faulty Coolant Gauge, Coolant Gauge harness is open or shorted, Coolant Gauge 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 2,898

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 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1692 Cadillac Description

With the key on, and the Powertrain Control Module (PCM) detects an open, short-to-ground or short-to-voltage condition in the Coolant Gauge Circuit.

OBDII Code P1692 Cadillac - Coolant Gauge Circuit High Voltage - AutoCodes.com — P1692 Cadillac Code - Coolant Gauge Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1692 Cadillac?

Faulty Coolant Gauge
Coolant Gauge harness is open or shorted
Coolant Gauge circuit poor electrical connection

How to Fix the DTC P1692 Cadillac?

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 P1692 Cadillac 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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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 P1692 Cadillac Code

1. What does the OBDII code P1692 mean on a Cadillac?

P1692 indicates a "Coolant Gauge Circuit High Voltage" issue, meaning the vehicle's ECM has detected a higher-than-expected voltage in the coolant temperature gauge circuit.

2. What are the common symptoms of code P1692 in a Cadillac?

Symptoms may include the coolant temperature gauge not working properly, engine overheating warnings, possible engine performance issues, or the Check Engine Light being illuminated.

3. What causes the P1692 code to appear in a Cadillac?

Common causes include a faulty coolant temperature sensor, damaged or corroded wiring in the gauge circuit, a poor electrical connection, or a malfunctioning instrument cluster.

4. How do I diagnose a P1692 code on my Cadillac?

Start by checking the coolant temperature sensor and its wiring for damage or corrosion, inspect the electrical connections, and use a multimeter to verify voltage levels in the circuit.

5. Can I drive my Cadillac with a P1692 code?

It's generally not recommended to drive for an extended period with this code, as it may prevent accurate monitoring of the engine's temperature, potentially leading to overheating.

6. How do I fix the P1692 code on a Cadillac?

Repairs may include replacing the coolant temperature sensor, repairing or replacing damaged wiring, cleaning corroded electrical connections, or replacing the instrument cluster if necessary.

7. How much does it cost to repair a P1692 code on a Cadillac?

Repair costs can vary, but replacing a coolant temperature sensor typically costs $100–$250, including parts and labor. Wiring repairs or instrument cluster replacement may cost more.

8. Can a low coolant level cause the P1692 code?

While low coolant levels don’t directly cause this code, they can lead to overheating and other issues. Ensure the coolant level is correct before diagnosing further.

9. Will clearing the P1692 code fix the problem?

Clearing the code may turn off the Check Engine Light temporarily, but it won't resolve the underlying issue. Proper diagnosis and repair are required to prevent the code from returning.

10. Does the P1692 code always require professional repair?

Not necessarily. If you're comfortable with basic automotive diagnostics, you can check and replace components like the coolant temperature sensor or inspect wiring on your own. For advanced issues, seek professional help.