C1437 Lexus Code - Lost Communication With ECM
Quick Answer
The Skid Control ECU (Brake Actuator Assembly) receives signals from the Engine Control Module (ECM) via the Controller Area Network (CAN) communication system. Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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
- C1437 Lexus indicates Lost Communication With ECM.
- Common causes
- Common causes include Faulty Skid Control ECU (Brake Actuator Assembly), Skid Control ECU harness is open or shorted, Skid Control ECU 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 C1437 Lexus Description
What are the Possible Causes of the DTC C1437 Lexus?
- Faulty Skid Control ECU (Brake Actuator Assembly)
- Skid Control ECU harness is open or shorted
- Skid Control ECU circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC C1437 Lexus?
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 C1437 Lexus 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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Frequently Asked Questions about C1437 Lexus Code
1. What does the OBDII code C1437 mean for a Lexus?
C1437 indicates a "Lost Communication With ECM," meaning the vehicle’s Electronic Control Module (ECM) is not communicating properly with other systems, such as the ABS or traction control.
2. What are the common symptoms of a C1437 code in a Lexus?
Common symptoms include illuminated warning lights (ABS, traction control, or check engine), loss of traction control functionality, and possible reduced engine performance.
3. What causes the C1437 code to appear on a Lexus?
The code can be caused by faulty wiring, a damaged ECM, a failed ABS module, poor electrical connections, or issues with the CAN (Controller Area Network) communication system.
4. Can a weak or dead battery trigger the C1437 code in a Lexus?
Yes, a weak or dead battery can cause communication issues between the ECM and other modules, potentially triggering the C1437 code.
5. How can you diagnose the C1437 code in a Lexus?
Diagnose this code by inspecting wiring and connectors for damage or corrosion, checking the battery voltage, and using a scan tool to test the CAN network and related control modules.
6. Is it safe to drive a Lexus with the C1437 code?
Driving with the C1437 code may be unsafe, as it could disable traction control or ABS, increasing the risk of losing control in slippery conditions.
7. Can a faulty ECM cause the C1437 code in a Lexus?
Yes, a malfunctioning ECM can fail to communicate with other systems, leading to the C1437 code.
8. Do I need to replace the ECM if I get a C1437 code on my Lexus?
Not necessarily. First, check for wiring issues, loose connections, or faulty modules before considering ECM replacement.
9. How much does it cost to fix the C1437 code on a Lexus?
Repair costs vary depending on the issue. Wiring repairs may cost $100-$300, while module or ECM replacement can cost $500-$1,500 or more.
10. Can clearing the C1437 code fix the problem?
Clearing the code with a scan tool may temporarily reset it, but the underlying issue must be addressed to prevent it from returning.
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