P1636

P1636

Pressure sensor ahead of throttle (boost pressure sensor)

NOTE:
A fault is detected if the value of the sensor exceeds or falls below a threshold:
- [measured value +30 hpa] < [ambient pressure -400 hpa] (P1636)
or
- [measured value -30 hpa] < [ambient pressure +200 hpa] (P1637)

Diagnostic conditions
- Engine speed < 1000 rpm
- Throttle position < 5 %
- No fault entered for: ambient pressure sensor or throttle potentiometer

Possible fault causes
- Loose contact or corrosion on connectors or lines
- Boost pressure sensor faulty
- Ambient pressure sensor faulty (DME control unit)