T8 / P0236 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Fault indicator lamp (for further information see WIS Fault diagnosis, general)
Charge Air Absolute Pressure Sensor Circuit. Performance Problem.
Fault symptom
Fault indicator lamp (for further information see WIS Fault diagnosis, general)
On-board diagnosis
Type of diagnosis:
Enable criteria:
| Battery voltage must be between 11 - 16 V. |
| NONE of the following DTCs must be detected: P0107, P0108, P0237, P0238, P2228 and P2229. |
| The conditions above must be fulfilled for more than 3 s, after which the engine must be running for the diagnosis to finally run. |
Fault criteria:
| Absolute pressure sensor value differs more than 12 kPa from atmospheric pressure sensor and manifold absolute pressure sensor. |
Dependent:
System reaction to a fault:
| Torque limited to max. 140 Nm. |
| Boost pressure adaption blocked. |
| The control module uses a substitute value that is a function of atmospheric pressure, engine speed and damper area. |
OK report:
| Fault criteria above NOT fulfilled. |
Fault handling:
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
Diagnostic help
Diagnosis regards:
| Electrical fault in connecting leads or component. |
| The signal is compared with the other pressure sensor(s) when the ignition is on and the engine not started. The value must be close to the other value(s). |
Functions in the diagnostic tool related to the fault:
| • | Absolute pressure sensor, charge air |
| • | Manifold absolute pressure sensor |
| • | Atmosphere Absoslute Pressure |
| (See also description of readings/activations in diagnostic tool) |
