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DTC codes / U04xx · Invalid data received from a module / U0430

U0430Invalid Data Received From Tire Pressure Monitor Module

U0430 means the vehicle's main network gateway or control module received data from the tire pressure monitor module that it judged invalid or corrupted. The computer detected a message from the TPMS module that failed its internal plausibility or checksum validation, so it flagged the communication as unreliable rather than trusting the tire pressure readings.

SystemNetwork
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaInvalid data received from a module

Symptoms you may notice

  • Tire pressure warning light illuminated on the dashboard, often flashing for a minute before staying solid
  • No tire pressure readings displayed on the instrument cluster or infotainment screen
  • A message such as 'Tire Pressure System Fault' or 'TPMS Service Required' shown in the driver information center
  • Often no symptoms besides the warning light, with the vehicle driving normally
  • Other driver assistance or comfort features that share the same network may behave erratically
  • Remote keyless entry or push-button start issues on some vehicles if the TPMS module shares a body network segment

Common causes, most likely first

  1. Low or failing battery in one or more tire pressure sensors causing corrupted RF transmissions
  2. Damaged or chafed wiring in the TPMS module harness, especially near the wheel wells or underbody
  3. Corroded or loose electrical connectors at the TPMS receiver or module
  4. Failed TPMS module or receiver unit that is unable to produce valid CAN messages
  5. Network communication bus fault, such as a shorted or open CAN line, affecting the module's ability to transmit clean data
  6. Aftermarket accessories or poor previous repairs that introduced electrical interference on the network
  7. Software or calibration issue in the TPMS module requiring a reflash or relearn procedure

How to diagnose and fix it

  1. Use an OBD-II scan tool to read all stored codes and confirm U0430 is current, then check for related TPMS or network codes in other modules
  2. Inspect and test all tire pressure sensors with a TPMS activation tool to verify battery status and signal strength
  3. Visually inspect the TPMS module, receiver, and associated wiring for damage, corrosion, or loose connections
  4. Perform a voltage drop and resistance test on the CAN bus lines at the TPMS module connector to rule out network faults
  5. Check for technical service bulletins or software updates for the TPMS module and perform a module reflash if available
  6. Replace the faulty TPMS module or receiver if it fails communication or plausibility tests, then perform a relearn procedure
  7. Clear all codes and road test the vehicle to confirm the U0430 does not return and the tire pressure readings display correctly

What most technicians miss with U0430

  • A weak sensor battery often causes intermittent invalid data long before the sensor stops transmitting entirely, so a sensor that still triggers the activation tool can still be the culprit.
  • The TPMS module on many vehicles is part of the body control module or a shared receiver, so a U0430 can appear after unrelated body repairs that disturbed the network wiring.
  • Aftermarket wheel and tire packages with non-OEM sensors are a frequent source of invalid data because the module may not recognize their transmission format.
  • A U0430 does not always mean the TPMS module is defective; a poor ground connection at the module can corrupt its CAN messages without setting a module-specific fault.
  • Some vehicles require a specific drive cycle or relearn procedure after battery replacement, and skipping it can leave a stored U0430 that looks like a hard fault.

Can I keep driving with U0430?

The vehicle remains safe to drive because the fault affects only the tire pressure monitoring information, not braking or steering. Check tire pressures manually with a gauge until the fault is repaired, and avoid relying on the dashboard display for pressure warnings.

Tools that help

Tools we recommend are in the Auto Veteran shop on Amazon. As an Amazon Associate we earn from qualifying purchases.

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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