What Does P072F Mean?
The TCM has detected that the transmission is stuck in 4th gear and cannot shift to any other gear. The 4th gear clutch elements remain engaged at all times, regardless of vehicle speed or throttle position. The driver will experience very sluggish acceleration from a stop (essentially starting in 4th gear), a tall gear ratio at low speeds, and the engine may stall or lug when pulling away from stops.
Common Causes
35%
TCM has commanded limp mode in 4th gear due to an underlying critical fault
25%
Shift solenoid failure preventing the TCM from releasing 4th gear or commanding other gears
20%
Stuck valve(s) in the valve body keeping the 4th gear hydraulic circuit applied
10%
4th gear clutch elements mechanically fused or stuck in the applied position
10%
Faulty transmission range sensor or speed sensors giving incorrect data to the TCM
Diagnostic Steps
1
Check for other DTCs in the TCM and ECM — a stuck-in-4th condition is almost always a limp mode response to another fault. Address the triggering code first.
2
Verify the gear ratio via ISS and OSS PIDs in live data across multiple driving conditions — confirm the ratio matches 4th gear specifications.
3
Use bi-directional scan tool commands to attempt shifting to other gears. Document which gears respond and which do not to narrow down the solenoid or circuit involved.
4
Test each transmission solenoid for proper resistance, current draw, and mechanical operation. Cross-reference with the solenoid application chart to identify which solenoid combination should release 4th gear.
5
If all solenoids pass electrically, perform a hydraulic pressure test at the 4th gear clutch apply circuit. Normal pressure with no release points to a mechanical issue; low pressure points to a valve body issue.
Estimated Repair Cost
$200 - $3,800
Parts + labor, varies by vehicle and location
The TCM has detected that the transmission is stuck in 4th gear and cannot shift to any other gear. The 4th gear clutch elements remain engaged at all times, regardless of vehicle speed or throttle position. The driver will experience very sluggish acceleration from a stop (essentially starting in 4...
The most common cause of P072F (Stuck in Gear 4) is: TCM has commanded limp mode in 4th gear due to an underlying critical fault
Typical repair costs for P072F range from $200 to $3,800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Starting in 4th gear makes the vehicle extremely sluggish from a stop — pulling into traffic or crossing intersections is dangerous due to poor acceleration. The engine may stall at low speeds. Drive only short distances at moderate speed to reach a repair facility, or have the vehicle towed.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P072F to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission / Gear Engagement
Difficulty
Type
Generic (SAE)
Recommended Tools
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