C1402 - ABS Control Module Communication Error in 2010-2015 Toyota Camry and Other Models

Quick Answer

C1402 means: C1402 indicates a communication error within the ABS control module.

Fix: Check and replace faulty components Cost: $500 - $1,200 Time: 90-180 minutes

Can I drive with C1402? Immediate attention is recommended to ensure safe braking performance.

Common Questions

What does C1402 mean and how does it affect my car?

C1402 signifies a communication failure with the ABS control module. This can affect your braking system's ability to prevent wheel lock-up during hard braking, which is crucial for maintaining control over your vehicle.

What are the most common causes of C1402 and how much does it cost to fix?

Common causes include a faulty ABS control module, damaged wiring, or malfunctioning sensors. Repair costs can range from $100 for wiring repairs to $1,200 for a complete module replacement.

Can I drive my car with C1402 or should I stop immediately?

While you might be able to drive, it's strongly advised to address the issue immediately as it significantly impacts braking performance, especially in emergencies.

How can I diagnose C1402 myself using GeekOBD APP?

You can use the GeekOBD APP to scan the vehicle for codes, view live data from the ABS system, and check for any anomalies in sensor readings, which can help you pinpoint the issue.

What vehicles are most commonly affected by C1402?

C1402 frequently appears in models like the 2010-2015 Toyota Camry, Honda Accord (2013-2017), and some Ford models from the same era. Always check for any recalls or technical service bulletins (TSBs) related to your vehicle.

How can I prevent C1402 from happening again?

Regularly inspect wiring and connectors for wear and corrosion, and perform routine maintenance on the ABS system to help prevent issues.

What is C1402?

The diagnostic trouble code (DTC) C1402 indicates a communication error between the ABS (Anti-lock Braking System) control module and other components within the vehicle’s electronic system. This code is commonly found in vehicles like the 2010-2015 Toyota Camry, but can also affect various models from other manufacturers. When this code is triggered, it means that the ABS control module is unable to send or receive data properly, which can lead to malfunctioning of the ABS system. This issue can result in the ABS warning light illuminating on the dashboard, and in some cases, a loss of ABS functionality, which is critical for maintaining vehicle stability during sudden braking. Ignoring this code can lead to further electrical issues and potential safety risks while driving, particularly in slippery conditions where ABS is essential. The underlying problem may stem from faulty wiring, a malfunctioning ABS module, or issues with the vehicle’s main computer (ECU). Addressing this issue promptly is crucial for ensuring safe driving conditions.

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

Symptoms

Common symptoms when C1402 is present:

  • The ABS warning light illuminates on your dashboard, indicating a problem with the braking system.
  • You may experience a loss of anti-lock braking functionality, especially during hard stops.
  • Increased brake pedal vibration or pulsation during braking, indicating potential issues with ABS operation.
  • Unusual noises from the ABS module or related components when braking.
  • The vehicle may exhibit erratic braking behavior, particularly in slippery conditions.

Possible Causes

Most common causes of C1402 (ordered by frequency):

  1. The most common cause is a faulty ABS control module, with an estimated likelihood of 40%. This module is responsible for managing the ABS system and can fail due to internal faults.
  2. Wiring issues, such as damaged or corroded wires, account for about 30% of cases. Poor connections or frayed insulation can disrupt communication between the ABS module and the ECU.
  3. A malfunctioning vehicle speed sensor can also trigger this code, with a 20% likelihood. This sensor provides essential data to the ABS module and can cause errors if it's not functioning correctly.
  4. Less common causes include software issues within the vehicle's ECU, which can affect how the ABS system operates.
  5. Rarer yet serious causes may involve faults in the vehicle’s main electronic control unit (ECU), leading to extensive repairs.

C1402 Repair Costs

Cost Breakdown by Repair Type

ABS Control Module Replacement

Replacing the faulty ABS control module is often necessary when communication errors occur.

  • Total: $500 - $1,200
  • Success rate: 85%
Wiring Repair

Repairing damaged wiring or connectors to restore proper communication.

  • Total: $100 - $400
  • Success rate: 75%
Money-Saving Tips for C1402
  • 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 C1402 Diagnosis Process

Follow these systematic steps to accurately diagnose C1402. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (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: OBD2 scan with GeekOBD APP - Use the app to retrieve all codes and freeze frame data to understand the fault context (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: Component testing - Use a multimeter or specific diagnostic tools to test the ABS control module and wiring (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: System function test - After any repairs, verify proper operation of the ABS system and clear codes using the GeekOBD APP (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: Road test verification - Drive the vehicle under various conditions to confirm the repair success and ensure the ABS operates as expected (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: Repairing C1402 in a 2012 Toyota Camry

Vehicle: 2012 Toyota Camry, 80,000 miles

Problem: Customer reported ABS warning light, with noticeable brake pedal pulsation.

Diagnosis: Diagnostic scan revealed C1402. Visual inspection found damaged wiring harness.

Solution: Replaced the damaged wiring and cleared the codes.

Cost: $300 (including parts and labor)

Result: ABS warning light cleared, and functionality restored.

Case Study 2: C1402 in a 2014 Honda Accord

Vehicle: 2014 Honda Accord, 65,000 miles

Problem: Driver experienced intermittent ABS activation and warning light.

Diagnosis: Diagnostic tools indicated C1402; module testing showed a faulty ABS control module.

Solution: Replaced the ABS control module and updated the vehicle's ECU software.

Cost: $1,000 (including parts and labor)

Result: ABS system functioned normally post-repair, with no further issues.

Diagnose C1402

Use GeekOBD APP for professional diagnosis!

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  • Professional-grade analysis
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Code Information

Code: C1402
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes