2427624 - W01 HIGH CO EMISSIONS

The percentage of CO and/or HC is higher than the recommended figure.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation
Check the condition of the air filterContinue to Step 1Filter element dirty or damagedReplace the filter element
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socketCheck that there are no fault in the engine management control unitContinue to Step 2'Supply system' error detectedSee table   Z50 
'Misfire' error detectedSee table   Z53 
'Catalytic converter' error detectedSee table   Z55 
'Upstream Lambda signal' error detectedSee table   Z56 
'Downstream Lambda signal' error detectedSee table   Z58 
Another error dected in the control unitContinue following the instructions for the diagnostic equipment.
Lack of dialogue with the control unitRestore the connection between the engine management control unit and the diagnostic connector
2ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Using the diagnostic equipment (Examiner or other iinstruments) carry out active diagnosis on the:

  • vapour recovery soleniod valve
  • injectors.
Continue to Step 3Connections faultyRestore the connection of the injectors and the solenoid with the control unit
Solenoid valve faultyReplace the solenoid valve Op.   1080E28 
Injector faultyReplace injector Op.   1056B70 
3UPSTREAM LAMBDA SENSOR CHECKAll OKProblems metOperation
Check that the upstream Lambda sensor is working properly.Continue to Step 4Lambda sensor faultyReplace the Lambda sensor Op.   1080B94 
4DOWNSTREAM LAMDBA SENSOR CHECKAll OKProblems metOperation
Check that the downstream Lambda sensor is working properly.Continue to Step 5Lambda sensor faultyReplace the Lambda sensor Op.   1080B95 
5CHECKING AIR CIRCUITAll OKProblems metOperation
Check the condition of the air supply circuitContinue to Step 6Circuit component damagedReplace the component involved
6CHECK ON FUEL PRESSUREAll OKProblems metOperation
Check the fuel supply pressure Op.   0510C10  Continue to Step 7Pressure not correctReplace the fuel pupm
7CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisFault persists