P0975 code meaning
Shift Solenoid B Control Circuit Range/Performance
Powertrain system Generic code P09xx codes Check engine light
What P0975 means
Range/performance fault in the drive circuit of shift solenoid B. Three documented uses differ widely. GM's 2007 Allison 1000 table used it for an open SS2 circuit, confirmed by an intrusive low-side test (400 ms, Type A). FCA's 2016 recall for the 9-speed front-drive transaxle (Cherokee, 200, Renegade, 500X, ProMaster City) names P0975 with P0978, P0981 and P0984 as the codes set by intermittent high resistance from poorly crimped terminals in the range sensor harness under old TCM software; updated software reports that case as P0901 instead. Ferrari's DCT uses P0975 for a missing actuator 2 position signal. Low/high are P0976/P0977.
P0975 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyHard
- Typical labor0.5 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0975
- MIL or transmission warning on
- Unexpected shift to neutral or loss of drive (FCA 9-speed)
- Fixed default gear or harsh shifts
Common causes of P0975
- Most likelyPoorly crimped terminals causing intermittent high resistance (FCA 9-speed recall)
- PossibleOpen or high-resistance coil of shift solenoid B
- PossibleOutdated transmission software that misreads harness resistance
- Less likelyFaulty driver stage in the transmission control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Shift solenoid bWiring harnessTCM
What each part of P0975 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 9 | Area: transmission. |
| 75 | The exact fault in that area. |
What to do next
- Note P0975 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 P0975
What does P0975 mean?
P0975 means "Shift Solenoid B Control Circuit Range/Performance". Range/performance fault in the drive circuit of shift solenoid B. It is a generic code, so it means the same on every make.
Is it safe to drive with P0975?
Drive gently and only to a workshop. With P0975 the car can go into limp mode (reduced power) to protect itself.
Will P0975 fail an emissions test?
Yes, it can. P0975 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 P0975 to fix?
Difficulty: hard. A typical repair takes 0.5 to 5 hours of work. This is a job for a workshop.
Will P0975 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.