P0755 Code - Shift Solenoid 'B' Malfunction
Quick Answer
Shift solenoid valve B is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module (ECM) (throttle opening). Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0755 indicates Shift Solenoid 'B' Malfunction.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shift solenoid 'B' valve.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0755 Description
What are the Possible Causes of the DTC P0755?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shift solenoid 'B' valve
- Shift solenoid 'B' valve harness is open or shorted
- Shift solenoid 'B' valve circuit poor electrical connection
How to Fix the DTC P0755?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0755 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P0755 BMW — Shift Solenoid 'B' Malfunction
- P0755 Chrysler — 2/4 Solenoid Circuit
- P0755 Dodge — 2/4 Solenoid Circuit
- P0755 Ford — Shift Solenoid 2 Circuit Malfunction
- P0755 Hyundai — Shift Control Solenoid Valve 'B'
- P0755 Infiniti — Shift Control Solenoid 'B' Malfunction
- P0755 Jeep — 2/4 Solenoid Circuit
- P0755 KIA — Underdrive Solenoid Valve System
- P0755 Lexus — Shift Solenoid 'B' Malfunction
- P0755 Mazda — Shift Solenoid 2 Circuit failure
- P0755 Mercedes-Benz — Shift Solenoid 'B' Malfunction
- P0755 MINI — Shift Solenoid 'B' Malfunction
- P0755 Mitsubishi — Shift Solenoid 'B' Malfunction
- P0755 Nissan — Shift Control Solenoid 'B' Malfunction
- P0755 RAM — 2/4 Solenoid Circuit
- P0755 Toyota — Shift Solenoid 'B' Malfunction
Frequently Asked Questions about P0755 Code
1. What are the common symptoms of OBDII code P0755 Shift Solenoid 'B' Malfunction?
- Common symptoms include harsh shifting, delayed or erratic shifting, transmission slipping, and the transmission staying in one gear.
2. What causes OBDII code P0755 Shift Solenoid 'B' Malfunction?
- The code is typically caused by a faulty shift solenoid 'B', low transmission fluid, a clogged transmission filter, or issues with the transmission control module.
3. How serious is OBDII code P0755 Shift Solenoid 'B' Malfunction?
- While the vehicle may still be operable with this code, it can lead to further transmission damage if left unresolved. It's best to address the issue promptly.
4. Can I continue driving with OBDII code P0755 Shift Solenoid 'B' Malfunction?
- It's not recommended to continue driving with this code, as it can cause further damage to the transmission. It's best to have the issue diagnosed and repaired as soon as possible.
5. How do I diagnose OBDII code P0755 Shift Solenoid 'B' Malfunction?
- Diagnosis typically involves scanning the vehicle's onboard computer for the code, checking the transmission fluid level and condition, and performing a detailed inspection of the transmission components.
6. Can I repair OBDII code P0755 Shift Solenoid 'B' Malfunction myself?
- While some DIY enthusiasts may be able to replace a shift solenoid, diagnosing and repairing this code may require specialized tools and expertise. It's often best to consult a professional mechanic.
7. How much does it cost to fix OBDII code P0755 Shift Solenoid 'B' Malfunction?
- The cost of repairs can vary depending on the underlying issue and the labor rates in your area. It's recommended to get multiple quotes from reputable repair shops.
8. Will resetting the OBDII code P0755 Shift Solenoid 'B' Malfunction make it go away?
- Resetting the code may temporarily turn off the check engine light, but it won't fix the underlying issue causing the code. The problem should still be diagnosed and repaired.
9. What happens if I ignore OBDII code P0755 Shift Solenoid 'B' Malfunction?
- Ignoring this code can lead to more severe transmission problems, increased fuel consumption, and potential safety hazards due to unpredictable shifting behavior.
10. Can a transmission flush help resolve OBDII code P0755 Shift Solenoid 'B' Malfunction?
- A transmission flush is unlikely to resolve this specific code, as it's typically caused by a faulty shift solenoid 'B' or other internal transmission issues. It's best to diagnose and address the root cause directly.
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