OBD-II code · Powertrain (generic)
P09A1 Shift Solenoid H Control Circuit/Open
The control circuit of shift solenoid H reports a control circuit/open condition. Gear element actuation cannot be commanded reliably on this channel.
Is it safe to drive with P09A1?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyOpen in solenoid control wire
- PossibleOpen solenoid coil
- Less likelyPin pushed back out of connector body
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
- 1.5–6 h
- Emissions test
- Usually unaffected
- Parts involved
- Shift Solenoid H, Wiring Harness, Tcm
Related codes
- P08D4Shift Solenoid J Control Circuit/Open
- P08DDShift Solenoid K Control Circuit/Open
- P08E6Shift Solenoid L Control Circuit/Open
- P097AShift Solenoid A Control Circuit/Open
- P097BShift Solenoid B Control Circuit/Open
- P097CShift Solenoid C Control Circuit/Open
- P097DShift Solenoid D Control Circuit/Open
- P097EShift Solenoid E Control Circuit/Open
- P097FShift Solenoid F Control Circuit/Open
- P09A0Shift Solenoid G Control Circuit/Open
- P099EShift Solenoid H Control Circuit Low
- P099FShift Solenoid H Control Circuit High
- P09A2Gate Select Position Circuit B Circuit
- P09A3Gate Select Position Circuit B Range/Performance
- P09A4Gate Select Position Circuit B Low
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.