OBD2 code P1605: Loss OF HVAX Serial Data
Manufacturer-specific powertrain code.
Detected Root Component
Powertrain Component
Observed Symptoms
- Check engine light on (MIL)
Possible Causes
- Fault in a vehicle-specific sensor, actuator or circuit
- Damaged wiring or connector
- Outdated calibration
- Faulty control module (rare)
Tools Required
Interactive Diagnostic
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Diagnostic Result
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Parts likely to be the cause (Moteur (général))
Moteur (général)
Photo d'illustration : Moteur (général)
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Frequently asked questions about code P1605
What does code P1605 mean? ▾
OBD2 code P1605: Loss OF HVAX Serial Data. Manufacturer-specific powertrain code.
What are the symptoms of code P1605? ▾
Code P1605 may cause: Check engine light on (MIL). The intensity of these symptoms varies depending on the vehicle and driving conditions.
What causes code P1605? ▾
The most common causes of code P1605 are: Fault in a vehicle-specific sensor, actuator or circuit, Damaged wiring or connector, Outdated calibration, Faulty control module (rare). A proper OBD2 diagnostic will pinpoint the exact cause.
Is it serious to drive with code P1605? ▾
Yes, code P1605 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.
How do I fix code P1605? ▾
Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Fault in a vehicle-specific sensor, actuator or circuit, Damaged wiring or connector, Outdated calibration, Faulty control module (rare). Difficulty: complex · Estimated time: 30-60min.