E39 / P1101 00
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Check Engine
Performance loss.
The motor may turn off.
Airflow from MAF, TP and System Pressure Sensors Does Not Match
Fault symptom
Check Engine
Performance loss.
The motor may turn off.
On-board diagnosis
Type of diagnosis:
Enable criteria:
| The following diagnostic trouble codes may not be generated: |
| P0111, P0112, P0113, P0114 |
| P0116, P0117, P0118, P0119 |
| P2227, P2228, P2229, P2230 |
Fault criteria:
| Calculated air mass, based on the throttle angle and engine speed, do not correspond with the current air mass. |
Fault handling:
| (See section Fault handling III, "Other emission-related components and functions" for more information.) |
Checking the wiring harness
Jiggle the wiring harness at several points to detect intermittent breaks or short circuits. Check also the connector for oxidation or loose pins.
Diagnostic help
Diagnosis regards:
| The DTC indicates that the values from the mass air flow sensor and Absolute pressure sensor have been deemed unreliable after comparison with a calculated value. This could be due to an air leak or a faulty mass air flow sensor or Absolute pressure sensor. |
| First check the integrity of the intake system. Then continue with fault diagnosis. |
Functions in the diagnostic tool related to the fault:
| (See also description of readings/activations in diagnostic tool) |
