P08BCPressure Control Solenoid L Stuck On
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Set when pressure control solenoid L keeps applying pressure although the control module has commanded it off, so the element it feeds stays loaded. No manufacturer publishes this code. Toyota, the only documented user of letter L, files a stuck valve under P08BA71 instead. GM's P08C5 for solenoid M of the Corvette dual clutch shows how such a check can work: after a selector valve change the module watches the shift rods, and unexpected movement of one rod or relaxation of another within 200 ms points to a valve that keeps pressure on. CARB lists transmission solenoids as monitored output components. P08BB is the stuck off counterpart. For the driver this means shift shock, binding or a fallback gear.
- What you may notice
- Check engine light on
- Harsh engagement or binding during shifts
- Transmission locked in a fallback gear
- Likely causes
- LikelyValve spool held open by debris
- PossibleWorn bore in the valve body letting pressure through
- RareOutput stage or wiring keeping the solenoid energised
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.