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Engine-Codes – Generic – P187C

P187C Code - Gear Block Reverse

Quick Answer

The diagnostic code P187C refers to a Gear Block Reverse issue in the vehicle's transmission system. Common causes include Faulty solenoids or sensors in the transmission, Low transmission fluid level, Worn-out clutch or torque converter. 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 Faulty solenoids or sensors in the transmission, Low transmission fluid level, Worn-out clutch or torque converter.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P187C Description

The diagnostic code P187C refers to a Gear Block Reverse issue in the vehicle's transmission system. This code indicates that there is a problem with the vehicle's ability to shift into reverse gear properly. When this code is triggered, it can have several implications for the vehicle's performance and overall drivability.

OBDII Code P187C - Gear Block Reverse
P187C Code - Gear Block Reverse

Common Causes of P187C

  1. Faulty solenoids or sensors in the transmission
  2. Low transmission fluid level
  3. Worn-out clutch or torque converter
  4. Internal mechanical damage within the transmission
  5. Electrical issues affecting the transmission system

Symptoms of P187C

  1. Difficulty shifting into reverse gear
  2. Delayed engagement when shifting into reverse
  3. Jerky or rough shifting when attempting to go in reverse
  4. Unusual noises coming from the transmission when in reverse
  5. Vehicle stalls or lurches when trying to reverse

How to Fix P187C

  1. Begin by performing a thorough diagnostic scan to confirm the presence of the P187C code and identify any additional related issues.
  2. Check the transmission fluid level and condition, topping up or replacing the fluid as needed.
  3. Inspect and test the solenoids and sensors in the transmission system, replacing any faulty components.
  4. If necessary, remove and inspect the transmission for internal damage, repairing or replacing any damaged parts.
  5. Clear the diagnostic trouble code from the vehicle's computer and test the vehicle to ensure that the Gear Block Reverse issue has been resolved.

Cost to Fix P187C

The cost of repairing a Gear Block Reverse issue can vary depending on the specific cause of the problem and the extent of the damage. In general, the cost of parts and labor for this type of repair can range from $500 to $1500 or more. It's important to keep in mind that labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's advisable to contact local repair shops for a more accurate estimate based on your specific circumstances.

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Code P187C Information for Specific Makes

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.

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