AutoCodesChevrolet – P0669 2015 Chevrolet Silverado

P0669 2015 Chevrolet Silverado Code - Control Module Temperature Sensor Circuit High Voltage

Quick Answer

The Transmission Control Module (TCM) temperature sensor is located inside of the control solenoid valve assembly which has no serviceable parts. Common causes include Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted, Control Solenoid Valve Assembly 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
P0669 2015 Chevrolet Silverado indicates Control Module Temperature Sensor Circuit High Voltage.
Common causes
Common causes include Faulty Control Solenoid Valve Assembly, Control Solenoid Valve Assembly harness is open or shorted, Control Solenoid Valve Assembly 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 184
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 23, 2022
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Code P0669 2015 Chevrolet Silverado Description

The Transmission Control Module (TCM) temperature sensor is located inside of the control solenoid valve assembly which has no serviceable parts. The Transmission Control Module temperature sensor provides the temperature of the Transmission Control Module substrate. This temperature reading is used in various diagnostic routines in the Transmission Control Module software. This fault is handled inside the Transmission Control Module and no external circuits are involved. The Diagnostic Trouble Code (DTC) will be set when the TCM internal temperature is 249°C (480°F) or greater for 1 min.
OBDII Code P0669 2015 Chevrolet Silverado - Control Module Temperature Sensor Circuit High Voltage - AutoCodes.com
P0669 2015 Chevrolet Silverado Code - Control Module Temperature Sensor Circuit High Voltage

What are the Possible Causes of the DTC P0669 2015 Chevrolet Silverado?

  • Faulty Control Solenoid Valve Assembly
  • Control Solenoid Valve Assembly harness is open or shorted
  • Control Solenoid Valve Assembly circuit poor electrical connection

How to Fix the DTC P0669 2015 Chevrolet Silverado?

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 P0669 2015 Chevrolet Silverado 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 P0669 2015 Chevrolet Silverado code?

Need more information on how to fix the P0669 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0669 2015 Chevrolet Silverado 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 P0669 2015 Chevrolet Silverado Code

1. What does the OBDII code P0669 mean on a 2015 Chevrolet Silverado?

P0669 indicates a high voltage issue in the control module temperature sensor circuit, which monitors the temperature of the control module to prevent overheating.

2. What are the common symptoms of a P0669 code in a 2015 Chevrolet Silverado?

Common symptoms include the check engine light turning on, potential overheating of the control module, poor engine performance, or intermittent electrical issues.

3. What causes the P0669 code in a 2015 Chevrolet Silverado?

Possible causes include a faulty control module temperature sensor, damaged or corroded wiring, a loose electrical connection, or a malfunctioning control module.

4. Can I drive my 2015 Chevrolet Silverado with a P0669 code?

While the vehicle may still be drivable, ignoring the P0669 code can lead to control module overheating, which may cause severe electrical or engine-related issues over time.

5. How do I diagnose a P0669 code on a 2015 Chevrolet Silverado?

Start by inspecting the control module temperature sensor and its wiring for damage or corrosion. Use a multimeter to check sensor voltage and continuity, and consult a professional if needed.

6. How is the P0669 code fixed in a 2015 Chevrolet Silverado?

Repairs may involve replacing the control module temperature sensor, fixing damaged wiring or connectors, or in rare cases, replacing the control module itself.

7. How much does it cost to fix a P0669 code on a 2015 Chevrolet Silverado?

Repair costs vary, but replacing the temperature sensor typically ranges from $100 to $300, depending on labor costs and parts pricing.

8. Can a bad battery cause a P0669 code in a 2015 Chevrolet Silverado?

While unlikely, a weak or faulty battery can sometimes cause electrical issues that may affect the control module circuits. Testing the battery is recommended during diagnosis.

9. Does clearing the P0669 code solve the issue in a 2015 Chevrolet Silverado?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.

10. Should I take my 2015 Chevrolet Silverado to a mechanic for a P0669 code?

If you're not experienced with electrical diagnostics and repairs, it’s best to consult a qualified mechanic to accurately diagnose and fix the issue.

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