P0755: Shift Solenoid B Malfunction
Can you still drive? Not recommended. Certain gears may be unavailable, and the transmission may be in limp mode. Drive to a shop at low speeds only.
What Does P0755 Mean?
Code P0755 indicates a malfunction in the shift solenoid B circuit. Shift solenoid B works in combination with solenoid A to produce different gear combinations. When solenoid B fails, it typically affects 2nd and 3rd gear shifts. The combination of which solenoids are on or off determines which gear is engaged, so a solenoid B failure can lock out specific gears.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Failed shift solenoid B
- Wiring problem in solenoid B circuit
- Corroded transmission connector pins
- Contaminated transmission fluid
- Faulty TCM
Symptoms
- Check engine light on
- No 2nd or 3rd gear
- Transmission stuck in limp mode
- Harsh 2-3 shift or 3-4 shift
- Delayed gear engagement
Diagnostic Steps
- 1Read all transmission codes and check for multiple solenoid faults
- 2Measure solenoid B resistance at transmission connector
- 3Check wiring between TCM and transmission for shorts or opens
- 4Test solenoid operation using scan tool bidirectional control
- 5Inspect transmission fluid for debris
- 6Drop pan and inspect solenoid B for physical damage
Recommended Parts & Tools
shift solenoid pack
transmission fluid
transmission filter kit
electrical connector cleaner
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $150 - $900 |
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Chat with AI About P0755Commonly Affected Vehicles
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Frequently Asked Questions
Which gears does shift solenoid B control?
Solenoid B typically affects 2nd and 3rd gear engagement, though the exact gears depend on the transmission design. It works in combination with solenoid A to produce all gear combinations.
Is a shift solenoid expensive to replace?
The solenoid itself is relatively inexpensive ($50-$150), but labor can be significant as the transmission pan must be removed and on some vehicles the valve body must come out. Total cost is typically $150-$500.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
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