P0243
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Black smoke from exhaust pipe
Loss of performance
Boost Pressure too Low. Mechanical Fault.
Fault symptoms
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Black smoke from exhaust pipe
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On-Board Diagnostics
Type of diagnosis:
Enable criteria:
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Battery voltage should be 10.2-15.8 V.
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Engine speed should be over 1700 rpm.
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Rpm changes between two measurements should not exceed a difference of 100 rpm.
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The difference between two injections should not exceed 5 mm
3
/C.
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EGR control should be 0%.
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Speed should be over 40 km/h.
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Injection quantity should be 20-60 mm
3
/C.
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Intake air temperature should be 20-90 °C.
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Atmospheric pressure should be 90-110 kPa.
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P1636 or P1637 should not be detected.
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These conditions should be fulfilled for 2.1 seconds before diagnostics run.
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Fault criteria:
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The difference between calculated and actual charge air pressure exceeds 70 kPa.
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Dependents:
System reaction to a fault:
OK report:
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Fault criteria not fulfilled.
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Fault handling:
Diagnostic help
Fault diagnosis focuses on leakage in the induction system, the malfunction of the charge pressure sensor and mass air flow sensor, and leakage on the exhaust side between the engine and turbo.
Functions in the diagnostic tool related to the fault:
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Read value:
Airmass / Combustion,
Mass Air Flow Sensor,
Requested VNT Position,
Actual VNT Position,
Requested Charge Air Absolute Pressure,
Charge Air Absolute Pressure (
Charge Air Pressure Sensor)
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See also description of read value under
"Read Values" menu
for more information.
