Fault Code P0642
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0642
Sensor Reference Voltage A Circuit Low
Low 5V reference voltage to sensors — may cause multiple simultaneous errors.
Part Details
Part Name
Sensor wiring / ECU
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪200 - ₪3,000
Engine Location
Sensor signal
Symptoms
- Multiple fault codes simultaneously
- Loss of power
Possible Causes
- 1Short in one sensor bringing down the entire line
- 2Faulty wiring
- 3Faulty ECU
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