OBD-II code · Powertrain (generic)
P07E8 Transmission Range Control A Circuit/Open
The transmission range control A circuit (used in shift-by-wire to drive the shift actuator that physically positions the manual valve in the valve body) is open. The TCM cannot move the manual valve into the commanded range, blocking shifts between P/R/N/D.
Is it safe to drive with P07E8?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyOpen wire to the range actuator
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.8–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Range Actuator, Wiring Harness
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.