Performance problem

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Fault symptoms
Engine speed drops slower than normal when accelerator pedal is released.
Misfiring can occur before trouble code is generated.

On-Board Diagnostics
Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria:
- General conditions for this trouble code: Atmospheric pressure must exceed 72 kPa and the engine coolant and intake air temperatures must exceed -7C.

- Test 1: Crankshaft stationary, even after ignition OFF. Car stationary. The difference in pressure between the other two absolute pressure sensors in the system less than 10 kPa.
- Test 2: Engine running. Engine speed above 1300 rpm. Engine load lower than 110 mg/c. Accelerator pedal fully released.

Fault criteria:
- Test 1: Sensor value differs more than 15 kPa from atmosphere absolute pressure sensor.
- Test 2: Sensor value exceeds 50 kPa.

- P0336 and P0337.

System reaction to a fault:
- Purging is blocked. Correction of air mass/combustion for fuel calculation is blocked. Charge air adaptation is blocked and reset.

OK report:
- Test 1 and Test 2 performed once and fault criteria not fulfilled. Fault criteria for P0107 or P0108 not fulfilled.

Fault handling: (See section Fault handling III, other emission-related components and functions for more information.)
- Type III.

Diagnostic help
Fault diagnosis concerns a fault in the sensor. A major vacuum leak can generate the trouble code.

Functions in the diagnostic tool related to the fault:
Pressure sensor value, unit kPa. The value should correspond with the other two pressure sensors when the engine is stationary. Accepted difference is 10 kPa.

See also the description of readings under Menu "Read Values" for more information.