PSG16 / P2227 FA
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Performance loss.
Manifold Absolute Pressure Sensor Circuit. Plausibility Fault with Atmosphere Pressure.
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Performance loss.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Engine speed below 950 rpm and below 15 mg/combustion. |
| NONE of the following DTCs must be detected: |
Fault criteria:
| Difference between boost pressure sensor and atmospheric sensor is greater than 22.5 kPa for more than 3 seconds. |
Dependent:
System reaction to a fault:
| The control module uses a substitute value of 70 kPa. |
Checking the wiring harness
| • | Faults in the control module female connector can be the cause of the DTC. Check the connector with respect to oxidation, depressed pins and pin clamping force. |
| • | Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force. |
Diagnostic help
Diagnosis regards:
Functions in the diagnostic tool related to the fault:
| Atmosphere Pressure Sensor |
| (See also description of readings/activations in diagnostic tool) |
