B2142 – OBD-II DTC

OBD-II DTC B2142 – NVM TIC Failure

DTC B2142 meaning

DTC B2142 refers to a Non-Volatile Memory (NVM) Trouble Code indicating a failure in the Tire Pressure Monitoring System (TPMS) Integrated Circuit (TIC). This code suggests that the system has detected an issue with the memory component responsible for storing tire pressure data, which can affect the overall functionality of the TPMS.

DTC B2142 symptoms

Common symptoms associated with DTC B2142 may include:

• Illumination of the TPMS warning light on the dashboard
• Inaccurate tire pressure readings
• Failure of the TPMS to reset or calibrate
• Possible erratic behavior of the TPMS system

DTC B2142 causes

The causes of DTC B2142 can vary, but typical reasons include:

• Faulty TPMS control module
• Corrupted or damaged non-volatile memory
• Electrical issues such as short circuits or open circuits
• Software glitches or outdated firmware in the TPMS

DTC B2142 seriousness

DTC B2142 is considered a moderate to serious issue. While it may not immediately affect vehicle safety, it can lead to improper tire pressure monitoring, which is crucial for safe driving. Ignoring this code can result in tire wear, reduced fuel efficiency, and increased risk of tire failure.

How to diagnose DTC B2142

To diagnose DTC B2142, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Check for any additional trouble codes that may provide more context.
3. Inspect the TPMS control module and wiring for visible damage or corrosion.
4. Test the voltage and ground connections to the TPMS module.
5. Perform a software update on the TPMS if applicable.
6. Clear the DTC and perform a system reset to see if the code returns.

How to fix DTC B2142 step-by-step instructions

To fix DTC B2142, follow these steps:

1. Ensure the vehicle is turned off and disconnect the battery.
2. Inspect and repair any damaged wiring or connectors related to the TPMS.
3. Replace the TPMS control module if it is found to be faulty.
4. Reinstall or replace the non-volatile memory if necessary.
5. Reconnect the battery and turn on the vehicle.
6. Use an OBD-II scanner to clear the DTC and verify that the issue is resolved.

How to erase DTC B2142

To erase DTC B2142, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the trouble codes section on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to ensure the code does not return.

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