P27B0 code meaning
Pressure Control Solenoid K Data Incompatible
Powertrain system Generic code P27xx codes Check engine light
What P27B0 means
P27B0 closes the data-incompatible series with letter K, and no public manufacturer document uses it. It would describe a tenth pressure control solenoid whose calibration record in the transmission controller is missing, mismatched or corrupt. For comparison, GM's 2020 table checks the records of valves A to H once per power-up and rates failures Type A; the ten-speed there needs only eight such valves. CARB 13 CCR 1968.2 is the legal basis for monitoring such output components. Practically, a workshop would treat K like its siblings: confirm the valve body ID, load the matching data and clear the code. A broken coil or wiring would produce circuit codes instead, not this data fault.
P27B0 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P27B0
- MIL on
- Shift quality problems on gears using valve K
Common causes of P27B0
- Most likelyValve K data never programmed into a new or used TCM
- PossibleValve body ID in the TCM differs from the fitted unit
- Less likelySoftware update overwrote or damaged the data block
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid kTCM
What each part of P27B0 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 7 | Area: transmission. |
| B0 | The exact fault in that area. |
What to do next
- Note P27B0 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 P27B0
What does P27B0 mean?
P27B0 means "Pressure Control Solenoid K Data Incompatible". P27B0 closes the data-incompatible series with letter K, and no public manufacturer document uses it. It is a generic code, so it means the same on every make.
Is it safe to drive with P27B0?
Drive gently and only to a workshop. With P27B0 the car can go into limp mode (reduced power) to protect itself.
Will P27B0 fail an emissions test?
Yes, it can. P27B0 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 P27B0 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will P27B0 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.