What causes an automatic transmission to be stuck in P gear and unable to shift?

1 Answers
DawsonRose
07/29/25 6:38pm
An automatic transmission being stuck in P gear and unable to shift may be due to gear lock, or not fully braking when parking, directly shifting into P gear, causing gear braking instead of brake braking. Additionally, if the entire vehicle cannot be powered on, the automatic transmission's self-protection mechanism may also prevent shifting. Specific reasons are as follows: 1. Gear lock engaged; When driving, shifting from P gear to other gears, Japanese cars generally require pressing the shift lock switch, while German cars usually require stepping on the brake. The P gear also functions as a handbrake, preventing rollback on slopes below 15 degrees, but steeper slopes require using the handbrake. 2. Other reasons: P gear lock mechanism stuck and unable to reset; shift solenoid valve damaged, unable to complete shift commands; gear linkage damaged or broken; control computer malfunction.
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