Applicable Systems
OBD-II

Symptoms

Shift solenoid C fault; specific gear shifts may be unavailable; transmission derate or limp mode.

Possible Causes

  • Shift solenoid C failure
  • Wiring fault
  • TCM driver

Troubleshooting Steps

  1. Step 1: Check solenoid C resistance
    Within spec
  2. Step 2: Check wiring
    Intact
  3. Step 3: Command with scanner
    Clicks
  4. Step 4: Replace if faulty
    Responds
  5. Step 5: Verify shifts
    Normal

How to Reset

Clear with OBD-II scanner.

Common Replacement Parts

  • Shift Solenoid C (OEM spec)

Frequently Asked Questions

  • Q: What is transmission limp mode?

    Safety mode where transmission locks in 2nd or 3rd gear with high line pressure. Prevents damage but severely limits speed. Requires immediate service.

Related OBD-II Generic (SAE J2012) Fault Codes

Source: SAE J2012 standard DTC list + OBD-II portal

Category: OBD-II