P0975Shift Solenoid B Control Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- MIL or transmission warning on
- Unexpected shift to neutral or loss of drive (FCA 9-speed)
- Fixed default gear or harsh shifts
- Likely causes
- 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
- RareFaulty driver stage in the transmission control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €0 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.