Shift Solenoid C Stuck On
P0762 indicates that shift solenoid C is stuck in the on position, preventing proper transmission fluid flow control during gear shifts. This causes the transmission to fail to shift properly and can lead to slipping, overheating, and limp mode activation.
What You Might Notice
- Transmission slipping between gears
- Transmission overheating
- Vehicle stuck in one gear or difficult gear engagement
- Decreased fuel economy
- Vehicle enters limp mode with reduced power
Most Common Causes
- 1
Faulty shift solenoid C
The solenoid is electrically stuck or mechanically stuck in the on position, preventing it from controlling transmission fluid pressure correctly.
- 2
Dirty or contaminated transmission fluid
Old or contaminated fluid can cause solenoid stiction and restrict hydraulic passages, preventing the solenoid from functioning properly.
- 3
Clogged transmission filter or restricted passages
A dirty filter or blocked hydraulic passages reduce fluid flow and pressure, causing the solenoid to malfunction or stay engaged.
- 4
Corroded wiring or faulty connector
Damaged wiring, corroded connectors, or poor electrical connections can cause the solenoid to remain energized or send incorrect signals.
How to Diagnose It
- 1
Check Faulty shift solenoid C — The solenoid is electrically stuck or mechanically stuck in the on position, preventing it from controlling transmission fluid pressure correctly.
- 2
Check Dirty or contaminated transmission fluid — Old or contaminated fluid can cause solenoid stiction and restrict hydraulic passages, preventing the solenoid from functioning properly.
- 3
Check Clogged transmission filter or restricted passages — A dirty filter or blocked hydraulic passages reduce fluid flow and pressure, causing the solenoid to malfunction or stay engaged.
- 4
Check Corroded wiring or faulty connector — Damaged wiring, corroded connectors, or poor electrical connections can cause the solenoid to remain energized or send incorrect signals.
How to Fix It
- 1
Replace shift solenoid C
Remove and replace the faulty solenoid with a new OEM or quality replacement part. This is the most common fix for a stuck solenoid condition.
- 2
Perform transmission fluid and filter service
Drain old transmission fluid, replace the transmission filter, and refill with fresh fluid. This removes contaminants that may be causing solenoid stiction.
- 3
Inspect and repair wiring and connectors
Check the solenoid connector and wiring harness for corrosion, damage, or loose connections. Repair or replace damaged wiring and clean corroded connectors.
- 4
Inspect transmission valve body
Remove and inspect the transmission valve body for internal blockages or mechanical damage that may be preventing solenoid operation. Clean or replace as needed.
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