Engine-CodesChevrolet – P0804 Chevrolet

P0804 Chevrolet Code - Skip Shift Lamp Control Circuit

Quick Answer

The P0804 diagnostic trouble code for Chevrolet vehicles refers to an issue with the Skip Shift Lamp Control Circuit. Common causes include Faulty skip shift solenoid, Wiring issues, Blown fuse. 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
P0804 Chevrolet indicates Skip Shift Lamp Control Circuit.
Common causes
Common causes include Faulty skip shift solenoid, Wiring issues, Blown fuse.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0804 Chevrolet Description

The P0804 diagnostic trouble code for Chevrolet vehicles refers to an issue with the Skip Shift Lamp Control Circuit. This code is typically found in manual transmission vehicles and is related to the skip shift feature, which is designed to improve fuel economy by forcing the driver to shift from first gear to fourth gear under certain driving conditions. The skip shift lamp is used to notify the driver when they need to shift to the higher gear.

OBDII Code P0804 Chevrolet - Skip Shift Lamp Control Circuit
P0804 Chevrolet Code - Skip Shift Lamp Control Circuit

Common Causes of P0804 Chevrolet

  1. Faulty skip shift solenoid
  2. Wiring issues
  3. Blown fuse
  4. Skip shift lamp malfunction
  5. ECM (Engine Control Module) issue

Symptoms of P0804 Chevrolet

  1. Check Engine Light illuminated
  2. Skip shift lamp not working
  3. Difficulty shifting gears
  4. Reduced fuel economy
  5. Rough or jerky shifting

How to Fix P0804 Chevrolet

  1. Begin by performing a thorough inspection of the skip shift lamp control circuit to identify any visible damage or loose connections.
  2. Test the skip shift solenoid to ensure it is functioning properly. Replace if necessary.
  3. Check the wiring harness for any breaks, corrosion, or loose connections. Repair or replace as needed.
  4. Inspect and replace any blown fuses related to the skip shift lamp control circuit.
  5. Reset the fault codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0804 Chevrolet

The cost of repairing the Skip Shift Lamp Control Circuit can vary depending on the specific issue causing the P0804 code and the labor rates of the auto repair shop. In general, the cost of parts for this repair could range from $50 to $200, with labor costs adding an additional $100 to $300. Overall, the total cost could fall between $150 to $500. However, it is important to keep in mind that these are rough estimates and actual costs may differ based on various factors such as location, vehicle make and model, and the severity of the issue. It is recommended to obtain a detailed quote from a trusted mechanic before proceeding with the repair.

When is the Code Detected?

When the Powertrain Control Module (PCM) commands the control circuit to a component OFF, the voltage potential of the circuit should be high (near battery voltage). If the fault detection circuit senses a voltage other than what is expected, the fault line status changes causing theP0804 code is set.

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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.

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