AutoCodes – Chevrolet – P0802 Chevrolet

P0802 Chevrolet Code - Transmission Control System MIL Request Circuit Open

Quick Answer

The Transmission Control Module (TCM) Malfunction Indicator Lamp (MIL) request circuit signals the Powertrain Control Module (PCM) that the TCM is requesting MIL illumination. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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: P0802 Chevrolet indicates Transmission Control System MIL Request Circuit Open.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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 970

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 15, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0802 Chevrolet Description

OBDII Code P0802 Chevrolet - Transmission Control System MIL Request Circuit Open - AutoCodes.com — P0802 Chevrolet Code - Transmission Control System MIL Request Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0802 Chevrolet?

Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0802 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 P0802 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 P0802 Chevrolet code?

Need more information on how to fix the P0802 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0802 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 P0802 Chevrolet Code

1. What are common symptoms of OBDII code P0802 in a Chevrolet related to the Transmission Control System MIL Request Circuit Open?

- Common symptoms include the illumination of the Check Engine light, transmission shifting issues, and potential lack of power.

2. What are the possible causes of OBDII code P0802 in a Chevrolet?

- Possible causes include a faulty transmission control module, damaged wiring or connectors in the circuit, or a defective MIL (Malfunction Indicator Lamp) control circuit.

3. How can I diagnose OBDII code P0802 in a Chevrolet?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, performing a visual inspection of the wiring and connectors, and testing the transmission control module and MIL control circuit.

4. Can I continue driving my Chevrolet with OBDII code P0802 present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further transmission issues and potential damage if left unresolved.

5. How can I repair OBDII code P0802 in a Chevrolet?

- Repair may involve replacing a faulty transmission control module, repairing damaged wiring or connectors, or addressing issues with the MIL control circuit as needed.

6. Are there any DIY tips for troubleshooting OBDII code P0802 in a Chevrolet?

- DIY tips may include checking for loose or damaged wiring, ensuring all connectors are securely attached, and consulting the vehicle's service manual for specific troubleshooting steps.

7. Will resetting the Check Engine light resolve OBDII code P0802 in a Chevrolet?

- Resetting the Check Engine light may temporarily turn it off, but the underlying issue causing the code will need to be diagnosed and repaired to prevent it from reoccurring.

8. How much does it typically cost to repair OBDII code P0802 in a Chevrolet?

- Repair costs can vary depending on the specific cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a mechanic easily fix OBDII code P0802 in a Chevrolet, or is it a complex issue?

- A qualified mechanic should be able to diagnose and repair OBDII code P0802, as long as they have the necessary tools and expertise to work on the transmission control system.

10. Is OBDII code P0802 exclusive to Chevrolet vehicles, or can it occur in other car brands?

- While the specific code may vary by manufacturer, similar transmission control system MIL request circuit open issues can occur in other vehicle brands as well.