AutoCodes – Generic – P187C

P187C Code - Gear Block Reverse

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: P187C indicates Gear Block Reverse.
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.

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Code Popularity 6,299

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P187C Description

The Twin Clutch Sportronic Shift Transmission (TC-SST) Electronic Control Unit (ECU) monitors if the gear engagement is normal. The TC-SST-ECU set the OBDII code when it determined that the engagement of the reverse gear to be impossible.

OBDII Code P187C - Gear Block Reverse - AutoCodes.com — P187C Code - Gear Block Reverse

What does this mean?

What are the Possible Causes of the DTC P187C?

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 P187C?

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 P187C 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.

Need more information about the P187C code?

Need more information on how to fix the P187C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P187C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P187C Mitsubishi — Gear Block Reverse

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P187C Code

1. What are the common symptoms of OBDII code P187C (Gear Block Reverse)?

- Common symptoms include difficulty shifting into reverse gear, delayed engagement when shifting into reverse, and in some cases, the vehicle may not move in reverse at all.

2. What could cause the OBDII code P187C (Gear Block Reverse) to trigger?

- This code is typically triggered by issues with the reverse gear mechanism, such as a faulty solenoid, a damaged gear block, or low transmission fluid levels.

3. How can I diagnose the cause of OBDII code P187C (Gear Block Reverse)?

- Diagnosing this code usually involves conducting a thorough inspection of the transmission system, checking the transmission fluid level and condition, and using a scan tool to analyze data from the transmission control module.

4. Is it safe to continue driving with OBDII code P187C (Gear Block Reverse) present?

- It is not recommended to continue driving with this code present, as it could lead to further damage to the transmission and potentially result in a loss of reverse gear functionality.

5. Can I repair OBDII code P187C (Gear Block Reverse) on my own?

- Repairing this code often requires specialized knowledge and tools, so it is recommended to seek assistance from a professional mechanic or a transmission specialist.

6. What are some possible repair options for OBDII code P187C (Gear Block Reverse)?

- Repair options may include replacing the faulty solenoid, repairing or replacing the damaged gear block, addressing any leaks in the transmission system, and ensuring the transmission fluid is at the correct level.

7. How much does it typically cost to repair OBDII code P187C (Gear Block Reverse)?

- The cost of repairing this code can vary depending on the extent of the damage and the specific repairs needed. It is advisable to obtain quotes from multiple repair shops for an accurate estimate.

8. Are there any preventive maintenance tips to avoid OBDII code P187C (Gear Block Reverse)?

- Regularly servicing the transmission, checking and maintaining proper transmission fluid levels, and addressing any transmission issues promptly can help prevent the occurrence of this code.

9. Can weather conditions affect the triggering of OBDII code P187C (Gear Block Reverse)?

- Extreme weather conditions, such as very low temperatures, can potentially exacerbate existing transmission issues and lead to the triggering of this code. Ensuring your vehicle is properly maintained can help mitigate this risk.

10. How urgent is it to address OBDII code P187C (Gear Block Reverse)?

- It is important to address this code promptly to prevent further damage to the transmission system and ensure the safe operation of the vehicle, especially considering the impact on reverse gear functionality.