U12B7 Code - Millimeter Wave Radar Local CAN Malfunction
Quick Answer
The Diagnostic Trouble Code (DTC) sets when a Controller Area Network (CAN) communication malfunction was detected between the Multipurpose Camera Unit Local and the Millimeter Wave Radar. Common causes include Faulty Millimeter Wave Radar, Millimeter Wave Radar harness is open or shorted, Millimeter Wave Radar circuit poor electrical connection. 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
- U12B7 indicates Millimeter Wave Radar Local CAN Malfunction.
- Common causes
- Common causes include Faulty Millimeter Wave Radar, Millimeter Wave Radar harness is open or shorted, Millimeter Wave Radar circuit poor electrical connection.
- 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.
Code U12B7 Description
What are the Possible Causes of the DTC U12B7?
- Faulty Millimeter Wave Radar
- Millimeter Wave Radar harness is open or shorted
- Millimeter Wave Radar circuit poor electrical connection
- Faulty Multipurpose Camera Unit
How to Fix the DTC U12B7?
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 U12B7 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.
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Information for Specific Makes
- U12B7 Acura — Millimeter Wave Radar Local CAN Malfunction
- U12B7 Honda — Millimeter Wave Radar Local CAN Malfunction
Frequently Asked Questions about U12B7 Code
1. What are common symptoms of OBDII code U12B7 (Millimeter Wave Radar Local CAN Malfunction)?
- Common symptoms include malfunctioning adaptive cruise control, blind spot detection issues, and inaccurate radar sensor readings.
2. What are possible causes of the U12B7 error code?
- Causes may include faulty radar sensor, damaged wiring or connectors, software glitches, or issues with the local Controller Area Network (CAN) communication.
3. How can I diagnose the Millimeter Wave Radar Local CAN Malfunction?
- Diagnosis typically involves using a scan tool to retrieve the specific trouble code, checking the radar sensor and its connections for physical damage, and testing the CAN bus communication.
4. Can driving with the U12B7 code present cause any safety concerns?
- Yes, driving with this code active can compromise the proper functioning of advanced safety features like automatic braking and collision avoidance systems.
5. What are some repair tips for fixing the Millimeter Wave Radar Local CAN Malfunction?
- Repair tips may include inspecting and repairing damaged wiring, replacing the radar sensor if faulty, updating software as recommended by the manufacturer, and ensuring all connections are secure.
6. Should I attempt to clear the U12B7 code on my own?
- It is recommended to diagnose and address the underlying issue causing the code before attempting to clear it. Clearing the code without fixing the problem may lead to it recurring.
7. Can extreme weather conditions contribute to the U12B7 error code?
- Yes, extreme weather conditions such as heavy rain, snow, or extreme temperatures can affect the performance of the radar sensor and the CAN communication, potentially triggering the U12B7 code.
8. How much does it typically cost to repair the Millimeter Wave Radar Local CAN Malfunction?
- Repair costs can vary depending on the cause of the issue, but expenses may include parts replacement, labor costs, and diagnostic fees, potentially ranging from hundreds to thousands of dollars.
9. Is the U12B7 code specific to certain vehicle makes and models?
- While the U12B7 code refers to a Millimeter Wave Radar Local CAN Malfunction, it can be found in various vehicles equipped with radar-based safety systems, such as adaptive cruise control and collision avoidance systems.
10. Can I continue driving my vehicle with the U12B7 code showing on the OBDII system?
- It is not recommended to continue driving the vehicle with the U12B7 code present, as it can affect the functionality of critical safety features and compromise overall driving safety.
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