P2180 problem
#4
RE: P2180 problem
Direct from VADIS for your code P2180= Volvo Code ECM-271A
Diagnostic trouble code(DTC) information
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from A=1, the short-term fuel trim will compensate for this by adjusting the injection time so that A= 1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-271A will be stored when the long-term trim must be adjusted to almost maximum in the lower part load area.
Substitute value: None
Possible source
Upper limit:
-intake air leakage
-exhaust system air leakage
-low fuel pressure
-defective heated oxygen sensor (HO2S)
Lower limit:
-intake air leakage
-high fuel pressure
-leaking injectors
-defective mass airflow (MAP) sensor
-contaminated engine oil -oil level too high
-defective heated oxygen sensor (HO2S) Fault symptom
Diagnostic trouble code(DTC) information
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from A=1, the short-term fuel trim will compensate for this by adjusting the injection time so that A= 1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-271A will be stored when the long-term trim must be adjusted to almost maximum in the lower part load area.
Substitute value: None
Possible source
Upper limit:
-intake air leakage
-exhaust system air leakage
-low fuel pressure
-defective heated oxygen sensor (HO2S)
Lower limit:
-intake air leakage
-high fuel pressure
-leaking injectors
-defective mass airflow (MAP) sensor
-contaminated engine oil -oil level too high
-defective heated oxygen sensor (HO2S) Fault symptom
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Jiveturkey31
Volvo 850
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06-22-2020 08:07 AM