P07A3

What it means

Friction element A does not release when commanded — the apply piston cannot retract, leaving the clutch or band engaged. The transmission cannot complete shifts that need element A released, leading to harsh engagement or stall when stopping.

Is it safe to drive?

This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.

Most likely causes

• Stuck apply piston (cannot retract)

  high

  One of the most commonly reported causes for this code — check this first.

• Broken or weak return spring

  medium

  A plausible cause — test and verify before replacing parts.

• Carbon or debris buildup preventing free movement

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P07A3 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?