Quick Answer

C0C86 means: C0C86 indicates a malfunction with the left rear tire pressure sensor.

Fix: Check and replace faulty components Cost: $100 - $250 Time: 90-180 minutes

Can I drive with C0C86? Address this issue promptly to avoid potential safety risks and tire damage.

Common Questions

What does C0C86 mean and how does it affect my car?

C0C86 signifies an issue with the left rear tire pressure sensor. It can lead to improper tire inflation, affecting your vehicle's handling and fuel efficiency. Ignoring this code may result in premature tire wear and potential safety risks.

What are the most common causes of C0C86 and how much does it cost to fix?

Common causes include a faulty tire pressure sensor, damaged wiring, or improper tire pressures. Repair costs can range from $100 for sensor replacement to $500 for TPMS module repairs, depending on the issue.

Can I drive my car with C0C86 or should I stop immediately?

While you can drive with this code, it is advisable to address it promptly. Ignoring it can lead to safety issues and increased tire wear, so it's best to have it diagnosed and repaired soon.

How can I diagnose C0C86 myself using GeekOBD APP?

Using the GeekOBD APP, you can perform an OBD2 scan to retrieve trouble codes. Check for any additional codes related to tire pressure sensors and monitor live data to assess sensor performance.

What vehicles are most commonly affected by C0C86?

Commonly affected vehicles include the 2017-2022 Jeep Cherokee and Dodge Durango, which are known for experiencing this code due to their TPMS configurations.

How can I prevent C0C86 from happening again?

Regularly check your tire pressures and have your TPMS inspected during routine maintenance. Ensure that any tire replacements are done with compatible sensors.

What is C0C86?

DTC C0C86 is a diagnostic trouble code that indicates a problem with the 'Left Rear Tire Pressure Sensor' in vehicles equipped with a Tire Pressure Monitoring System (TPMS). This code typically triggers when the TPMS detects that the tire pressure sensor in the left rear tire is either malfunctioning or not communicating properly with the vehicle's onboard computer. In practical terms, if you see this code, it may signify that your left rear tire is either under-inflated, over-inflated, or that the sensor itself is defective. Ignoring this issue can lead to inconsistent tire pressures, which can affect your vehicle's handling and fuel efficiency and even lead to increased tire wear. For instance, in models like the 2017-2022 Jeep Cherokee, a malfunctioning tire pressure sensor can also trigger the TPMS warning light on your dashboard, reminding you to check your tires. Resolving this code promptly ensures safety, optimal performance, and cost savings on tire replacements in the long run.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0C86 is present:

  • The TPMS warning light illuminates on the dashboard, indicating a potential tire issue.
  • Drivers may notice a decrease in fuel efficiency due to improper tire pressures.
  • Handling may feel unsteady or less responsive, especially during turns.
  • You may experience uneven tire wear, leading to the need for premature replacements.
  • You might hear unusual noises, such as thumping, from the left rear tire area.

Possible Causes

Most common causes of C0C86 (ordered by frequency):

  1. The most common cause is a defective left rear tire pressure sensor, which has a likelihood of 60%. Often, sensors fail due to wear or battery depletion.
  2. A second common cause is a malfunction in the TPMS wiring, leading to communication issues between the sensor and the vehicle's computer.
  3. Tire pressure being significantly below or above recommended levels can also trigger this code, emphasizing the importance of regular tire checks.
  4. Less common but serious causes could include a faulty TPMS control module, which may require more extensive diagnostics and repairs.
  5. A rare cause could be water intrusion into the sensor, which can happen if the tire gets submerged or damaged.

C0C86 Repair Costs

Cost Breakdown by Repair Type

Tire Pressure Sensor Replacement

Replacing the left rear tire pressure sensor to restore proper functionality.

  • Total: $100 - $250
  • Success rate: 90%
TPMS Module Repair

Repairing or replacing the TPMS control module if necessary.

  • Total: $200 - $500
  • Success rate: 80%
Money-Saving Tips for C0C86
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C0C86 Diagnosis Process

Follow these systematic steps to accurately diagnose C0C86. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Conduct an initial visual inspection of the left rear tire for visible damage or signs of low pressure (5-10 minutes)

Step 1: Conduct an initial visual inspection of the left rear tire for visible damage or signs of low pressure (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve all codes, including freeze frame data to contextualize the fault (10-15 minutes)

Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve all codes, including freeze frame data to contextualize the fault (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Test the left rear tire pressure sensor using a multimeter to check for proper voltage readings (20-30 minutes)

Step 3: Test the left rear tire pressure sensor using a multimeter to check for proper voltage readings (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: If the sensor is functioning, verify the TPMS wiring for damage or corrosion (10-15 minutes)

Step 4: If the sensor is functioning, verify the TPMS wiring for damage or corrosion (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: After repairs, clear the codes and perform a road test to ensure proper functionality of the TPMS (15-20 minutes)

Step 5: After repairs, clear the codes and perform a road test to ensure proper functionality of the TPMS (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Successful Repair of C0C86 in 2018 Jeep Cherokee

Vehicle: 2018 Jeep Cherokee, 45,000 miles

Problem: Customer reported the TPMS warning light was constantly illuminated.

Diagnosis: After scanning with the GeekOBD APP, code C0C86 was confirmed. The left rear tire pressure sensor was found to be defective.

Solution: Replaced the left rear tire pressure sensor with a new OEM part.

Cost: $150 (including parts and labor)

Result: Post-repair, the TPMS light was cleared, and the sensor was confirmed to be functioning correctly.

Case Study 2: Resolving C0C86 in 2020 Dodge Durango

Vehicle: 2020 Dodge Durango, 30,000 miles

Problem: Driver noticed fluctuating tire pressure readings and a persistent warning light.

Diagnosis: The diagnostic process revealed a faulty TPMS control module after further testing of the wiring and sensor.

Solution: Replaced the TPMS control module.

Cost: $350 (including parts and labor)

Result: The TPMS system was restored to full functionality, with accurate readings from all sensors.

Diagnose C0C86

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis

Code Information

Code: C0C86
System: Chassis (ABS, Steering, Suspension)
Severity: MEDIUM
Category: Chassis Codes