AutoCodes – Hummer – P0803 Hummer

P0803 Hummer Code - Skip Shift Solenoid Control Circuit

Quick Answer

An ignition voltage is supplied to the Skip Shift solenoid coil. Common causes include Faulty Skip Shift Solenoid, Skip Shift Solenoid harness is open or shorted, Skip Shift Solenoid 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: P0803 Hummer indicates Skip Shift Solenoid Control Circuit.
Common causes: Common causes include Faulty Skip Shift Solenoid, Skip Shift Solenoid harness is open or shorted, Skip Shift Solenoid 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 2,856

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 May 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0803 Hummer Description

An ignition voltage is supplied to the Skip Shift solenoid coil. The Powertrain Control Module (PCM) controls the solenoid by grounding the control circuit via an internal switch called a driver. The driver supplies the ground for the component being controlled. Each driver has a fault line which the PCM monitors. When the PCM commands a component ON, the voltage of the control circuit should be low (near 0 volts). When the PCM commands the control circuit to a component OFF, the voltage potential of the circuit should be high (near battery voltage).

OBDII Code P0803 Hummer - Skip Shift Solenoid Control Circuit - AutoCodes.com — P0803 Hummer Code - Skip Shift Solenoid Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0803 Hummer?

Faulty Skip Shift Solenoid
Skip Shift Solenoid harness is open or shorted
Skip Shift Solenoid circuit poor electrical connection

How to Fix the DTC P0803 Hummer?

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 P0803 Hummer 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 P0803 Hummer 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 P0803 Hummer Code

1. What are the common symptoms of OBDII code P0803 in a Hummer?

- Common symptoms include difficulty shifting gears, the vehicle getting stuck in a specific gear, and the check engine light illuminating.

2. What does the OBDII code P0803 in a Hummer indicate?

- OBDII code P0803 indicates a problem with the Skip Shift Solenoid Control Circuit in the vehicle's transmission.

3. What are the possible causes of OBDII code P0803 in a Hummer?

- Possible causes include a faulty skip shift solenoid, damaged wiring or connectors in the solenoid circuit, or issues with the transmission control module.

4. How can I diagnose the Skip Shift Solenoid Control Circuit issue in my Hummer?

- Diagnosing the issue involves checking the skip shift solenoid, inspecting the wiring and connectors for damage, and using a scan tool to read the specific error codes.

5. Can I continue driving my Hummer with OBDII code P0803 present?

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

6. How can I repair OBDII code P0803 in my Hummer?

- Repairing the issue typically involves replacing the faulty skip shift solenoid, repairing any damaged wiring or connectors, and clearing the error codes using a scan tool.

7. Is it possible to reset the OBDII code P0803 in a Hummer without fixing the underlying issue?

- While you can clear the error code temporarily, it will likely reappear if the root cause of the problem is not addressed.

8. Can a DIY enthusiast fix OBDII code P0803 in a Hummer?

- Depending on your level of automotive expertise, you may be able to replace the skip shift solenoid or repair wiring issues yourself. However, it is recommended to consult a professional if you are unsure.

9. How much does it typically cost to repair OBDII code P0803 in a Hummer?

- The cost of repair can vary depending on the specific issue and labor rates in your area. However, replacing the skip shift solenoid can range from $150 to $300, excluding labor costs.

10. Are there any preventive measures to avoid encountering OBDII code P0803 in a Hummer?

- Regularly maintaining your vehicle, checking for loose or damaged wiring, and addressing any transmission issues promptly can help prevent the occurrence of OBDII code P0803.