Error Code P080C is defined as Upshift/Skip Shift Solenoid Control Circuit Low. It is a generic trouble code, meaning it applies to all vehicles with the OBD-II system, especially those made from 1996 up to present. This problem is more common among Audi, Chevrolet, Citroen, Hyundai, Ford, Peugeot, Nissan, and Volkswagen vehicles. Specifications on the definition and steps for repairs may vary depending on the model and make of the vehicle.
The signal of the upshift/skip shift solenoid circuit is monitored by the Transmission Control Module (TCM). This code is registered by the TCM when the upshift/skip shift solenoid would not be as per the factory specifications. The moment these parameters are not met (too low than the specifications set by the manufacturers), the TCM will then set up the Error Code P080C.
This error code doesn’t usually cause driving or performance issues. Instead, it will only activate the service engine soon light.
- Fault in the upshift/skip shift solenoid
- Opened or shorted upshift/skip shift solenoid harness
- Faulty electrical connection in the upshift/skip shift solenoid circuit
How to Check
As with most codes, the best way to start your diagnosis with this kind of error code is to refer to a technical service bulletin (TSB) for the specific year, make, model, and power plant of the vehicle. This can save a lot of time in the long run.
Use an OBD-II scanner to troubleshoot this code. Collect the freeze frame data and gather the details before this code appeared. Also, make sure you check for the presence of other trouble codes.
If there are other codes present, address these problems in the order they appear on the scanner. After addressing each code, reset the trouble codes and restart the vehicle to see if the codes come back.
If the codes don’t come back, then there’s a good chance it was either incorrectly triggered or an intermittent problem. If it’s the latter, then you may have to wait for the condition to worsen before you can properly diagnose.
Next, check the engine wiring harness. Look for signs of loose connections or damaged connectors. Refer to the factory wiring diagram to find the right power source and connection points between the circuits.
Next, check the Auto Transmission Filter and Transmission Torque Converter. Problems in these parts can result in this error code. The latter also needs full care from time to time.
Then, check the Auto Transmission Valve Body Kit, make sure it’s working efficiently.
Next, check the engine wiring harness. Issues in the wiring harness can lead to this code. Any open or short must be repaired or replaced as soon as possible.
Lastly, check the body control module component. Replace this part if necessary.
How to Fix
Common repairs for this code include:
- Repair or replacement of defective fuse or fuse-able link
- Repair the faulty ground straps
- Clean the connectors off of corrosion
- Repair or replacement of faulty wiring
- Replace defective PCM or TCM (rare)
This error code can be tricky to fix. Thus, it’s best to take your vehicle to a qualified technician and have it addressed as soon as possible.