P1635 Mitsubishi 5 Volt Reference Circuit
Possible causes
– A/C Pressure sensor harness is open or shorted
– MAP sensor harness is open or shorted
– EGR valve harness is open or shorted
– MAP sensor harness is open or shorted
– EGR valve harness is open or shorted
What about the obd code?
The P1635 Mitsubishi code is set when the reference voltage from the sensor is our of range.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1635 Mitsubishi Description
The Powertrain Control Module (PCM) uses a common 5.0 Volt Reference 1 circuit as a sensor feed. This circuit supplies 5 Volts to the following sensors: The Air Condition (A/C) Pressure sensor, the Manifold Absolute Pressure (MAP) sensor and the Engine Gas Recirculation (EGR) valve. The PCM monitors the voltage on the 5.0 Volt Reference 1 circuit.
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