Shift Solenoid B Control Circuit Range/Performance
The P0975 code means the vehicle's onboard diagnostic system has detected: Shift Solenoid B Control Circuit Range/Performance. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $150 - $800 (parts and labor)
Read and clear transmission codes. Many trans codes are caused by low or burnt fluid -- check level and color before assuming the worst.
Basic scanners only read engine codes. This reads transmission, ABS, and airbag too.
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Common Symptoms
- Check Engine Light illuminated
- Harsh or delayed 2-3 shift
- Transmission slipping during mid-range gear changes
- Possible limp mode activation
Probable Causes (Ranked by Likelihood)
- Shift solenoid B sticking or partially blocked Very High
- Contaminated or degraded transmission fluid High
- Electrical resistance drifting in solenoid B circuit Moderate
- Valve body bore wear at solenoid B location Low
Frequently Asked Questions
What shift does solenoid B control?
Shift solenoid B typically controls the 2-3 shift or works in combination with solenoid A to manage gear selection. The exact function varies by transmission type.
Can P0972 and P0975 appear together?
Yes, if both solenoids A and B show range/performance issues, the root cause may be systemic, such as contaminated fluid, a clogged filter, or low fluid level.
Is a solenoid replacement a DIY job?
Replacing shift solenoids requires dropping the transmission pan and sometimes removing the valve body. It is within the capability of experienced DIYers but requires care to avoid contamination and proper torque on all fasteners.
Mechanics Guide Step-by-step diagnosis
Step-by-Step Diagnostic Procedure
-
Check transmission fluid level and condition
-
Monitor shift solenoid B duty cycle and response on a scan tool
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Test solenoid B resistance and compare to specifications
-
Perform a transmission fluid and filter service as a first step
Sources 2
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
- Cross-checked against the SAE J2012:2002 DTC table (2026-08-27)archived scan of the SAE standard — readable copy, not SAE’s current edition
Commonly Affected Vehicles
- 2007-2017 Toyota Camry
- 2008-2018 Honda CR-V
- 2010-2020 Nissan Pathfinder (CVT)
- 2009-2019 Ford Escape
Related Codes
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