Shift Solenoid B Performance or Stuck Off
This code indicates a problem with the performance or fault in the Shift Solenoid B.
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 computer sees that the shift solenoid B isn't acting like it should when it's told to shift gears, which could be due to a problem with the solenoid or the wiring.
What the computer is actually seeing
The Transmission Control Module (TCM) checks the solenoid's response to its commands. If it's not shifting properly within a certain time frame (usually within 1 second), it stores this code.
What a healthy reading looks like
The solenoid should activate and allow fluid flow within 100 milliseconds when signaled.
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.
- 1Check the transmission fluid level; it should be between the min and max marks on the dipstick. If it's low, top it off and retest.
- 2Inspect the wiring and connectors for the shift solenoid B for damage or corrosion. Repair as necessary.
- 3Using a multimeter, check for proper voltage at the shift solenoid B. You should see battery voltage (around 12V) when the solenoid is activated.
- 4If wiring and voltage are good, test the shift solenoid B by applying direct power from the battery to see if it activates. If it doesn't, replace the solenoid.
- 5If the solenoid works with direct power, the issue may be with the TCM; consider checking for other TCM codes or testing the TCM function.
Common causes
- Faulty shift solenoid B
- Wiring issues or damaged connectors
- Low transmission fluid level
- Contaminated transmission fluid
- Faulty Transmission Control Module (TCM)
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
You can drive the vehicle, but shifting may be rough or delayed, which can affect drivability.
Will this code come back after I clear it?
If the issue isn’t fixed, it’s likely to return once the vehicle is driven again.
Does this issue pair with a specific maintenance problem?
It can be related to low transmission fluid or contamination, so check the fluid condition.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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