U0430: Invalid TPMS Data Received
The U0430 code indicates that the engine control module (ECM) or powertrain control module (PCM) has received invalid, corrupted, or out-of-range data from the tire pressure monitoring system (TPMS) module over the CAN bus. This is a network communication code, meaning the issue lies in data integrity rather than a mechanical TPMS fault. The TPMS module may be transmitting pressure data that doesn't match the expected format or values, or data may be lost during serial transmission.
1. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.
2. Most Common Causes
- Internal TPMS module failure (corrupted or damaged firmware)
- Electromagnetic interference on the CAN bus affecting communication
- Abnormal resistance or open circuit in the CAN bus wiring to the TPMS module
- Corroded, oxidized, or loose pins in the TPMS module connector
- Low supply voltage or poor ground to the TPMS module
- Software incompatibility between TPMS module and ECM/PCM after an update
3. Symptoms You Will Notice
- Illuminated TPMS warning light
- Possible check engine light or communication-related warning
4. Step-by-Step Diagnosis
Scan for all codes and note any related U-codes or TPMS codes
Inspect TPMS module connector for corrosion, damage, or loose pins
Check CAN bus wiring for opens, shorts, or high resistance
Verify TPMS module power and ground circuits
Test TPMS module operation with a scan tool or substitute a known-good module if necessary
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive short distances, but you may lose TPMS functionality. Have it diagnosed soon to prevent potential communication issues with other modules.
How much does it cost to fix?▼
Diagnosis typically costs $100-$150. Repair costs vary: cleaning connectors may be under $100, while replacing a TPMS module can range from $200 to $500 including labor.