P08BB code meaning
Pressure Control Solenoid L Performance/Stuck Off
Powertrain system Generic code P08xx codes Check engine light
What P08BB means
Set when pressure control solenoid L is commanded but the pressure or shift element it serves does not respond, i.e. the valve acts as if it were stuck in its off state. No manufacturer documents this code publicly. Toyota, the only known user of letter L, reports a stuck valve as P08BA with suffix 71 instead. The closest documented analogue is GM's P08C4 for solenoid M on the Corvette dual clutch, where an intrusive routine moves the shift rods slightly and flags the valve when the expected rod travel stays below 100 µm. CARB requires such functional checks for transmission solenoids. P08BC is the opposite fault, P08BF to P08C2 cover the circuit. The driver notices missing or harsh shifts.
P08BB at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 6 hours
- Clears after repairAfter a drive cycle
Symptoms of P08BB
- Check engine light on
- Missing, slipping or delayed shifts
- Possible substitute gear operation
Common causes of P08BB
- Most likelyValve spool held closed by debris or varnish
- PossibleLow fluid level or weak supply pressure to the valve
- PossibleLeaking seal or circuit downstream of the valve
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid lValve body
What each part of P08BB means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 8 | Area: transmission. |
| BB | The exact fault in that area. |
What to do next
- Note P08BB and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P08BB
What does P08BB mean?
P08BB means "Pressure Control Solenoid L Performance/Stuck Off". Set when pressure control solenoid L is commanded but the pressure or shift element it serves does not respond, i.e. It is a generic code, so it means the same on every make.
Is it safe to drive with P08BB?
Drive gently and only to a workshop. With P08BB the car can go into limp mode (reduced power) to protect itself.
Will P08BB fail an emissions test?
Yes, it can. P08BB is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P08BB to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will P08BB clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.