E39 / P2227 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Malfunction Indicator Lamp
Atmosphere Pressure Sensor Circuit, Performance Problem
Fault symptom
Malfunction Indicator Lamp
On-board diagnosis
Type of diagnosis:
Enable criteria:
| NONE of the following DTCs must be detected: |
| The following diagnostic trouble codes may not be generated: |
Fault criteria:
| The difference between the actual atmospheric pressure and calculated atmospheric pressure differs by more than 15 kPa when the car has travelled more than 100 m since the last atmospheric pressure calculation was made. |
| Atmospheric pressure is below 50 kPa or exceeds 105 kPa. |
Checking the wiring harness
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:
| Electrical fault in connecting leads or component. |
Functions in the diagnostic tool related to the fault:
| Atmosphere Pressure Sensor |
| (See also description of readings/activations in diagnostic tool) |
