2AD-FHV Rough Idling or Excessive Engine Vibrations

2AD-FHV problems Rough Idling or Excessive Engine Vibrations HINT: Rough idling and excessive engine vibrations are checked in this troubleshooting procedure. Specified values in the following troubleshooting flowchart are for reference only. Variations in the Data List result values may occur depending on the measuring conditions or the vehicle's age. Do not judge the vehicle to be normal even when the Data List values indicate a standard level. There are possibly some concealed factors of the malfunction. Check that the vehicle has not been modified in any way prior to the vehicle inspection.

2AD-FHV Black Smoke Emitted

2AD-FHV problems Black Smoke Emitted Inspection procedure NOTICE: After replacing the ECM, the new ECM needs registration and initialization. After replacing a supply pump, the ECM needs initialization. After replacing a injector, the ECM needs registration.

2ad-fhv Engine Difficult to Start or Stalling

2ad-fhv problems Engine Difficult to Start or Stalling Inspection procedure NOTICE: After replacing the ECM, the new ECM needs registration and initialization. After replacing a supply pump, the ECM needs initialization. After replacing an injector, the ECM needs registration.

DTC P2237, DTC P22378, DTC P2239, DTC P2252, DTC P2253

DTC    P2237    Oxygen (A/F) Sensor Pumping Current Circuit / Open (Bank 1 Sensor 1) DTC    P2238    Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1) DTC    P2239    Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1) DTC    P2252    Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1) DTC    P2253    Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1)

DTC P2226 P2227 P2228 P2229 2AD-FHV

DTC P2226 Barometric Pressure Circuit DTC P2227 Barometric Pressure Circuit Range / Performance DTC P2228 Barometric Pressure Circuit Low Input DTC P2229 Barometric Pressure Circuit High Input

DTC P2121 2AD-FHV

DTC P2121 Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance

DTC P2120 P2122 P2123 P2125 P2127 P2128 P2138 2AD-FHV

DTC P2120 Throttle / Pedal Position Sensor / Switch "D" Circuit DTC P2122 Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input DTC P2123 Throttle / Pedal Position Sensor / Switch "D" Circuit High Input DTC P2125 Throttle / Pedal Position Sensor / Switch "E" Circuit DTC P2127 Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input DTC P2128 Throttle / Pedal Position Sensor / Switch "E" Circuit High Input DTC P2138 Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation

DTC P2047 P2048 P2049 2AD-FHV

DTC P2047 Reductant Injector Circuit / Open (Bank 1 Unit 1) DTC P2048 Short to GND in Reductant Injector Circuit (Bank 1) DTC P2049 Short to B+ in Reductant Injector Circuit (Bank 1)
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