Shift Solenoid 'B' Range/ Performance Problem
Indicates a problem with the shift solenoid 'B' in the transmission.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The transmission's shift solenoid 'B' isn't working correctly, affecting gear changes.
What the computer is actually seeing
The Engine Control Module (ECM) monitors the shift solenoid 'B' circuit's voltage and response. If it detects a voltage issue (like low voltage under 0.5V or high voltage over 4.5V) or no shifting activity when commanded, it sets this code.
What a healthy reading looks like
Expected shift solenoid voltage should be between 1.5V and 3.5V when commanded. Proper operation means the solenoid should engage or disengage within 30 milliseconds.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the transmission fluid level and condition. If low or dirty, replace fluid. Decision: If fluid is good, go to step 2.
- 22. Inspect the wiring and connectors to shift solenoid 'B' for damage or corrosion. Repair as necessary. Decision: If wiring is good, go to step 3.
- 33. Measure voltage at the shift solenoid connector with the engine running and transmission in gear. Expected voltage should be 1.5V to 3.5V. Decision: If voltage is in range, replace shift solenoid 'B'. If out of range, check ECM and wiring before replacement.
Common causes
- Faulty shift solenoid 'B'
- Wiring issues in the solenoid circuit
- Transmission fluid level low or contaminated
- ECM malfunction
Typical repair cost
$$$
Related codes
Frequently asked questions
Can I drive my car with this code?
You may drive short distances, but expect rough shifting and possible transmission damage if ignored.
Will this code come back after clearing it?
If the underlying problem isn't fixed, the code will likely return.
What happens if I ignore this code?
Ignoring it may cause shifting issues, leading to more severe transmission problems.
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