AutoCodesChevrolet – P0669 2014 Chevrolet Silverado

P0669 2014 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 2014 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 180
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 2014 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 2014 Chevrolet Silverado - Control Module Temperature Sensor Circuit High Voltage - AutoCodes.com
P0669 2014 Chevrolet Silverado Code - Control Module Temperature Sensor Circuit High Voltage

What are the Possible Causes of the DTC P0669 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the P0669 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0669 2014 Chevrolet Silverado Code

1. What does the OBDII code P0669 mean on a 2014 Chevrolet Silverado?

The P0669 code indicates a high voltage issue in the Control Module Temperature Sensor Circuit, suggesting a fault in monitoring the control module's temperature.

2. What are common symptoms of the P0669 code on a 2014 Chevrolet Silverado?

Symptoms may include an illuminated Check Engine Light, erratic engine performance, potential overheating warnings, or no noticeable symptoms at all.

3. What causes the P0669 code on a 2014 Chevrolet Silverado?

Possible causes include a faulty control module temperature sensor, damaged wiring or connectors, a short circuit, or a malfunctioning engine control module (ECM).

4. Can I drive my 2014 Chevrolet Silverado with the P0669 code?

While the vehicle may still be drivable, ignoring this code could lead to further engine or electrical issues and should be addressed promptly.

5. How do I diagnose the P0669 code on a 2014 Chevrolet Silverado?

Start by inspecting the wiring and connectors for damage or corrosion. Then, use a multimeter to test the voltage and resistance of the temperature sensor circuit.

6. How do I fix the P0669 code on a 2014 Chevrolet Silverado?

Repairs may include replacing a damaged temperature sensor, repairing or replacing faulty wiring or connectors, or reprogramming or replacing the ECM if necessary.

7. How much does it cost to fix the P0669 code on a 2014 Chevrolet Silverado?

Costs can vary, but replacing the temperature sensor typically ranges from $100 to $300, while ECM repairs or replacements may cost significantly more.

8. Can a bad battery cause the P0669 code on a 2014 Chevrolet Silverado?

A weak or failing battery can cause voltage irregularities that might trigger this code, though this is less common.

9. Will clearing the P0669 code fix the issue on a 2014 Chevrolet Silverado?

Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue must be resolved to prevent the code from returning.

10. Is the P0669 code specific to Chevrolet Silverado vehicles?

No, the P0669 code can apply to other vehicles with OBDII systems, but the diagnostic and repair steps can vary by make and model.

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