P187B Code - Gear Block 6th
Quick Answer
The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors if the gear engagement is normal. Common causes include Malfunction of Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU), Insufficient fluid level, Malfunction of TC-SST gear. 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
- P187B indicates Gear Block 6th.
- Common causes
- Common causes include Malfunction of Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU), Insufficient fluid level, Malfunction of TC-SST gear.
- 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 P187B Description
What are the Possible Causes of the DTC P187B?
- Malfunction of Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU)
- Insufficient fluid level
- Malfunction of TC-SST gear
- Malfunction of clutch assembly
How to Fix the DTC P187B?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P187B 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
- P187B Mitsubishi — Gear Block 6th
Frequently Asked Questions about P187B Code
1. What does the OBDII code P187B mean?
P187B indicates an issue with the transmission system, specifically the inability to engage or maintain 6th gear, often referred to as "Gear Block 6th."
2. What are common symptoms of the P187B code?
Symptoms may include difficulty shifting into 6th gear, the transmission slipping, reduced fuel efficiency, and the check engine light being illuminated.
3. What causes the P187B code to appear?
Common causes include a faulty transmission solenoid, low or degraded transmission fluid, mechanical wear in the transmission, or issues with the transmission control module (TCM).
4. Can I still drive my car with the P187B code?
Driving may be possible, but it is not recommended as ignoring the issue can lead to further damage to the transmission and reduced performance.
5. How is the P187B code diagnosed?
A mechanic will typically use a scan tool to confirm the code, inspect the transmission fluid, test the solenoids, and check for any internal mechanical damage.
6. What are common fixes for the P187B code?
Repairs can include replacing the transmission solenoid, flushing and refilling the transmission fluid, reprogramming or replacing the TCM, or addressing internal transmission damage.
7. How much does it cost to fix the P187B code?
Repair costs can range from $150 for a solenoid replacement to over $2,000 for internal transmission repairs, depending on the severity of the issue.
8. Can low transmission fluid cause the P187B code?
Yes, low or degraded transmission fluid can prevent proper hydraulic pressure, leading to difficulty engaging 6th gear and triggering this code.
9. Will resetting the check engine light fix the P187B code?
Resetting the light without addressing the underlying issue will not resolve the problem, and the code is likely to return.
10. Can a bad TCM cause the P187B code?
Yes, a malfunctioning transmission control module can result in improper gear engagement, including issues with 6th gear.
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