P080C — Upshift/Skip Shift Solenoid Control Circuit Low #

Note: The code description may vary depending on the vehicle’s manufacturer (OEM).

• Upshift/Skip Shift Solenoid Control Circuit Low (Generic/OEMs)
• Skip Shift Solenoid Circuit Low (Chrysler, GM)
• 1-4 Upshift Solenoid Circuit Low (Dodge, Jeep)
• Skip Shift Solenoid A Control Circuit Low (Chevrolet, GMC)

Summary of code P080C #

P080C is a diagnostic trouble code (DTC) indicating a problem with the electrical control circuit for the upshift or skip shift solenoid within the vehicle’s transmission system. The skip shift solenoid is an electromechanical device used to control gear changes, particularly to skip certain gears under specific conditions for fuel efficiency or emissions compliance. When the Powertrain Control Module (PCM) detects a voltage lower than expected in this circuit, it triggers P080C. This issue can lead to abnormal shifting behavior or even transmission performance concerns. While not immediately catastrophic, ignoring this code may result in drivability problems and potential long-term transmission damage.

Common symptoms for code P080C #

Drivers may notice several changes in how their vehicle shifts or responds to gear changes. These symptoms are often subtle at first but can become more pronounced if the underlying issue is not addressed. Watch for the following:

• Check Engine Light (CEL) illuminated on the dashboard
• Noticeable hesitation or delay during upshifts
• Transmission stuck in a higher or lower gear
• Loss of skip shift function (forced gear skipping)
• Reduced fuel efficiency
• Occasional harsh or abrupt gear changes

Probable causes for code P080C (in order of likelihood) #

Several factors can trigger the P080C code, most of which are related to the electrical integrity of the skip shift solenoid circuit. Based on frequency and field experience, here are the most common causes:

1. Faulty upshift/skip shift solenoid (mechanical or internal electrical failure)
2. Damaged wiring or poor connection in the solenoid circuit (corrosion, chafing, broken wires)
3. Defective or corroded solenoid connector
4. Failed transmission control module (TCM) or Powertrain Control Module (PCM)
5. Open or short to ground in the circuit
6. Blown fuse or relay controlling the circuit

Step-by-step diagnostic procedure for code P080C #

Accurate diagnosis is essential to avoid unnecessary parts replacement. Here is a professional, methodical approach to pinpoint the root cause of P080C:

• 1. Scan for DTCs: Retrieve all stored codes (including pending and history) with a professional OBD-II/EOBD scanner. Record freeze frame data.
• 2. Visual inspection: Examine the skip shift solenoid, harness, and connectors for signs of corrosion, loose terminals, or visible damage.
• 3. Electrical testing: Using a digital multimeter, check for proper voltage and ground at the solenoid connector with the ignition on. Reference OEM wiring diagrams.
• 4. Continuity check: Test continuity from the PCM/TCM to the solenoid. Look for open circuits or shorts to ground.
• 5. Solenoid resistance test: Measure the resistance of the solenoid (spec varies by OEM, typically 10–60 ohms). Out-of-spec readings indicate a fault.
• 6. Command test: Using a bidirectional scanner, command the solenoid on/off and observe operation. No response suggests a failed solenoid or control module issue.
• 7. Inspect control modules: If wiring and solenoid check out, suspect PCM/TCM failure or programming issues (rare).

Possible repairs for code P080C #

Repair actions depend on the specific cause identified during diagnostics. The following are common fixes associated with P080C:

• Replace the skip shift/upshift solenoid if testing confirms failure
• Repair or replace damaged wiring or connectors in the circuit
• Clean corroded terminals and apply dielectric grease
• Replace a blown fuse or faulty relay (check root cause of blown fuse)
• Replace or reprogram the PCM/TCM (only if proven defective after all other checks)

Is it safe to drive with code P080C? #

Limited — Caution advised. While most vehicles remain drivable with code P080C present, you may experience abnormal shifting, loss of skip shift function, or reduced fuel economy. If the transmission starts slipping, becomes stuck in gear, or shifts harshly, continued driving can further damage transmission components. It is best to have the issue diagnosed and repaired promptly to avoid additional problems and increased repair costs.

Vehicles most frequently affected by code P080C #

While P080C can appear in any modern vehicle with an electronically controlled manual or automatic transmission, certain models are more commonly affected due to the presence of skip shift systems. These typically include:

• Chevrolet Camaro (manual transmission, skip shift feature)
• Chevrolet Corvette (C5, C6, C7, skip shift feature)
• Dodge Challenger and Charger (manual transmission)
• Jeep Wrangler (manual transmission)
• GMC Sierra and Chevrolet Silverado (manual transmission, rare)

Common mistakes & best practices for code P080C #

A correct and thorough diagnosis is crucial. Skipping steps or guessing can lead to wasted time and unnecessary expenses. Here are some common pitfalls and professional tips:

• Replacing the solenoid without checking wiring or connectors first
• Overlooking blown fuses or relays associated with the circuit
• Assuming a PCM/TCM fault without verifying all other components
• Not using OEM wiring diagrams for accurate pin identification
• Neglecting to clear DTCs and verify repair with a test drive

Express FAQ: code P080C #

Here are concise answers to common questions about P080C:

• Q: Can P080C cause my vehicle to fail emissions testing?
  A: Yes. An active Check Engine Light and recorded transmission DTCs will typically result in a failed emissions or state inspection.
• Q: Is it expensive to fix P080C?
  A: Costs depend on the root cause. Replacing a skip shift solenoid is usually moderate, but wiring or module issues can increase labor and parts costs.