C1851 Acura Code - Rear Differential Pump Motor
Quick Answer
The C1851 code for Acura vehicles specifically relates to an issue with the Rear Differential Pump Motor. Common causes include Electrical issues such as wiring faults or a malfunctioning control module, Mechanical failure within the rear differential pump motor, Lack of proper maintenance leading to pump motor wear and tear. 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
- C1851 Acura indicates Rear Differential Pump Motor.
- Common causes
- Common causes include Electrical issues such as wiring faults or a malfunctioning control module, Mechanical failure within the rear differential pump motor, Lack of proper maintenance leading to pump motor wear and tear.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C1851 Acura Description
The C1851 code for Acura vehicles specifically relates to an issue with the Rear Differential Pump Motor. The rear differential pump motor is a crucial component of the vehicle's all-wheel drive (AWD) system, responsible for transferring power between the front and rear axles to ensure optimal traction and stability. When this code is triggered, it indicates that there is a malfunction or failure within the rear differential pump motor, which can lead to significant performance issues and potential safety concerns.
Common Causes of C1851 Acura
- Electrical issues such as wiring faults or a malfunctioning control module
- Mechanical failure within the rear differential pump motor
- Lack of proper maintenance leading to pump motor wear and tear
- Contamination of the pump motor with debris or moisture
- Overheating of the pump motor due to excessive strain or towing heavy loads
Symptoms of C1851 Acura
- Illuminated AWD warning light on the dashboard
- Whining or grinding noises coming from the rear of the vehicle
- Difficulty engaging or disengaging AWD mode
- Uneven tire wear due to improper power distribution
- Loss of traction or stability, especially on slippery surfaces
How to Fix C1851 Acura
- Diagnose the specific cause of the issue by conducting a comprehensive inspection of the rear differential pump motor and related components.
- Replace the faulty rear differential pump motor with a new or rebuilt unit to restore proper functionality.
- Check and repair any wiring or electrical connections related to the pump motor to ensure a reliable power supply.
- Perform a thorough system check and test drive to verify that the AWD system is functioning correctly after the repair.
- Regularly maintain the AWD system and rear differential pump motor to prevent future issues and ensure optimal performance.
Cost to Fix C1851 Acura
The typical repair costs for addressing a C1851 code related to the rear differential pump motor can vary depending on the extent of the damage, the cost of parts, and the labor rates of the auto repair shop. On average, this repair can range from $500 to $1500, including parts and labor. However, it's important to note that these costs can fluctuate based on location, vehicle make and model, and the specific diagnosis and repair process required. It's recommended to consult with a trusted mechanic or dealership to get a more accurate estimate for this repair.
Tech Notes for C1851 Acura
DTC C1851-18: Rear Differential Pump Motor Circuit Low Current
DTC C1851-19: Control Module Internal Control Module Malfunction
Need more information about the C1851 Acura code?
Need more information on how to fix the C1851 Acura code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1851 Acura code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C1851 Acura Code
1. What are the common symptoms of OBDII code C1851 in an Acura related to the rear differential pump motor?
The common symptoms include the illumination of the check engine light, difficulty shifting gears, or abnormal noises coming from the rear differential area.
2. What causes OBDII code C1851 to appear in an Acura's diagnostic system?
The code C1851 typically indicates a malfunction or failure of the rear differential pump motor in the Acura vehicle.
3. How can I diagnose the issue related to OBDII code C1851 in my Acura?
Diagnosing the issue involves using an OBDII scanner to read the trouble codes, conducting a visual inspection of the rear differential pump motor, and testing the motor's functionality.
4. Is it safe to continue driving my Acura with OBDII code C1851 present?
It is not recommended to drive the vehicle with OBDII code C1851 present, as it can lead to further damage to the rear differential system and potentially affect the vehicle's drivability.
5. Can I repair the rear differential pump motor issue causing OBDII code C1851 myself?
Repairing the rear differential pump motor issue may require specialized tools and expertise. It is recommended to consult a qualified mechanic or dealership for proper diagnosis and repair.
6. Are there any preventive maintenance tips to avoid encountering OBDII code C1851 in my Acura?
Regularly inspecting the rear differential system, ensuring proper lubrication, and addressing any unusual noises or vibrations promptly can help prevent issues leading to OBDII code C1851.
7. How much does it typically cost to repair the rear differential pump motor issue associated with OBDII code C1851 in an Acura?
The cost of repair can vary depending on the extent of the damage and labor rates. It is advisable to obtain quotes from different service centers for an accurate estimate.
8. Can resetting the OBDII system clear the code C1851 related to the rear differential pump motor in my Acura?
Resetting the OBDII system may temporarily clear the code, but it is essential to address the underlying issue causing the code to prevent it from reoccurring.
9. Is the rear differential pump motor a common problem in Acura vehicles triggering OBDII code C1851?
The rear differential pump motor issue causing OBDII code C1851 may not be a common problem in all Acura vehicles but can occur due to various factors like wear and tear or electrical issues.
10. How urgent is it to address OBDII code C1851 related to the rear differential pump motor in my Acura?
It is recommended to address OBDII code C1851 promptly to prevent further damage to the rear differential system and ensure the safe operation of the vehicle.
Discuss the causes and fixes for C1851 Acura OBDII Code
Code C1851 Acura comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.