Launch X431 PAD V Troubleshooting: 2024 Dongfeng Ambient Temperature Sensor Failure

This guide provides step-by-step instructions for diagnosing and resolving ambient temperature sensor failures on a 2024 Dongfeng Tianjin using the Launch X431 PAD V Elite. Launch X431 HD Software Authorization & Adapters Package is required to perform this function.


Step-by-Step Diagnostic Procedure:
1. Initial Check
Symptoms: Incorrect temperature readings, HVAC malfunctions, or related DTCs.
Ensure the vehicle is properly powered (ignition ON or engine running).

2. Diagnostic Scan
Launch the Intelligent Diagnose function.


Select [Engine System], then [Click In] to confirm vehicle version.



3. Retrieve Fault Codes
Select [Read Diagnostic Trouble Codes (DTCs)] to check for active errors.
Note any ambient temperature sensor-related codes (e.g., P0073, P0071, or manufacturer-specific codes).



4. Repair & Reset
Replace the faulty ambient temperature sensor (refer to vehicle service manual for location).
Clear DTCs to confirm repair success.


5. Verification
Rescan the system to ensure no recurring DTCs.
Test HVAC/climate control to verify proper sensor function.

Tech support:
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