AutoCodes – Chevrolet – P0669 2016 Chevrolet Silverado

P0669 2016 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 2016 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 202

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 23, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0669 2016 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 2016 Chevrolet Silverado - Control Module Temperature Sensor Circuit High Voltage - AutoCodes.com — P0669 2016 Chevrolet Silverado Code - Control Module Temperature Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0669 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the P0669 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2016 Chevrolet Silverado Code

What does OBDII code P0669 mean for a 2016 Chevrolet Silverado?

Code P0669 indicates a high voltage issue in the Control Module Temperature Sensor Circuit, which monitors the temperature of the control module.

What are the common symptoms of code P0669?

Symptoms may include an illuminated check engine light, erratic engine performance, or reduced fuel efficiency.

What causes code P0669 in a 2016 Chevrolet Silverado?

Common causes include a faulty control module temperature sensor, damaged wiring, poor electrical connections, or issues in the control module itself.

Can driving with code P0669 damage my vehicle?

Driving with this code may not cause immediate damage, but ignoring it can lead to further performance issues or potential damage to the control module.

How do I diagnose code P0669?

Diagnosis typically involves scanning for additional codes, inspecting the temperature sensor and wiring, and testing the voltage in the circuit.

How can I fix code P0669 on my Silverado?

Repairs may include replacing the temperature sensor, repairing damaged wiring, or addressing faults in the control module.

Is code P0669 specific to the Chevrolet Silverado?

No, this code can appear on other vehicles with control module temperature sensors, but the diagnosis and repair steps may vary.

How much does it cost to repair code P0669?

The cost depends on the specific repair needed. Sensor replacement may cost around $100-$300, while control module repairs can be more expensive.

Can a faulty control module cause code P0669?

Yes, an internal failure in the control module can trigger this code if the sensor circuit is not functioning properly.

Do I need professional help to fix code P0669?

If you're experienced with vehicle electronics, you may attempt repairs yourself. Otherwise, a professional mechanic is recommended for accurate diagnosis and repair.