Upshift/Skip Shift Solenoid Control Circuit Low
The P080C code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the control circuit of the upshift/skip shift solenoid. This solenoid is part of the transmission control system, typically found in manual transmission vehicles, that prevents shifting from 1st to 2nd gear under certain conditions to improve fuel economy. A low circuit voltage suggests a short to ground, open circuit, or faulty solenoid, which can prevent the solenoid from operating correctly, leading to transmission shifting issues.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission stuck in 1st gear or unable to shift to 2nd gear
- Harsh or delayed shifting
- Reduced fuel economy
2. Most Common Causes
- Faulty upshift/skip shift solenoid
- Open or shorted wiring in the solenoid control circuit
- Poor electrical connection in the solenoid circuit
- Failed PCM (rare)
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other related codes.
Step 2: Visually inspect the wiring and connectors for the upshift solenoid for damage, corrosion, or loose connections.
Step 3: Test the solenoid resistance with a multimeter; compare to manufacturer specifications.
Step 4: Check for voltage at the solenoid connector with the ignition on; if no voltage, trace circuit back to PCM.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive with this code as it can cause transmission shifting problems, potentially leading to unsafe driving conditions or further transmission damage.
How much does it cost to fix?▼
The cost to fix P080C typically ranges from $50 to $150 for parts and labor, depending on whether the solenoid or wiring needs replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.