22 · Diagnostics

Catalyzer error

Make: Fiat
Model: Doblò Factory Service Manual
Year: 2000–2010
Section: Examiner › Catalyzer error

‹ Prev Misfire error in one cylinder Next › Upstream lambda sensor signal error

Fault diagnosisCatalyzer error

CATALYZER ERROR

The diagnostic equipment signals the following error: Catalyzer

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Connect the tester (Examiner or Examiner Plus) and transcribe the errors and environmental parameters Check for the 'Catalyzer' error only		'Upstream lambda probe' error present	See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR
			'Mixture concentration' error present	See table Z50 MIXTURE STRENGTH ERROR
			The 'Misfire' error is present	See table Z53 MISFIRE ERROR
			The 'Downstream Lambda signal' error is present	See table Z58 DOWNSTREAM LAMBDA SENSOR SIGNAL ERROR
			The 'Catalyzer' error only is present	Continue to Step 1
			Other errors present	Identify and eliminate the cause of the anomaly. Continue to Step 5
1	EXHAUST SYSTEM LEAKS CHECK	All OK	Problems met	Operation
	Look and listen to check the exhaust system from the cylinder head outlet to the downstream lambda probe. Check that there are no leaks	Continue to Step 2	There are leaks	Restore the exhaust system seal and replace the affected parts if necessary Continue to Step 5
2	ROAD TEST TO CHECK MIXTURE STRENGTH	All OK	Problems met	Operation
	Road test the vehicle and check the mixture strength in the 1st and 2nd closed loops using the diagnostic equipment. Check that the activation is correct	Continue to Step 3	The 1st closed loop activation is not correct	See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR
		Continue to Step 3	The 2nd closed loop activation is not correct	See table Z58 DOWNSTREAM LAMBDA SENSOR SIGNAL ERROR
3	CHECKING INLET AND EXHAUST SYSTEM SEAL	All OK	Problems met	Operation
	Check the exhaust system and ensure there are no leaks from the cylinder head outlet to the upstream lambda probe See Test 1072Ato check seal of the inlet and exhaust system	Continue to Step 4	Seal not correct	Restore system seal and replace the affected parts if necessary Continue to Step 5
4	REPLACING THE CATALYZER	All OK	Problems met	Operation
	Replace the catalyzer Op. 1076C16	Continue to Step 5
5	DELETING AND CHECKING ERROR	All OK	Problems met	Operation
	Use a tester to cancel the errors in the control unit. Carry out a road test and ensure the error does not recur	Continue to Step 6	The fault persists, it is the first time that this step has been reached and the catalyzer has not yet been replaced	Continue to Step 0
		Continue to Step 6	The fault persists, but it is the second time that this step has been reached or the catalyzer has already been replaced	Contact Technical Support for further information on the problem
6	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists

The diagnostic equipment signals the following error: Catalyzer

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Connect the tester (Examiner or Examiner Plus) and transcribe the errors and environmental parameters Check for the 'Catalyzer' error only	End of diagnosis	'Upstream lambda probe' error present	Continue according to the instructions for the See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR
			'Mixture concentration' error present	Continue according to the instructions for the See table Z50 MIXTURE STRENGTH ERROR
			The 'Misfire' error is present	Continue according to the instructions for the See table Z53 MISFIRE ERROR
			The 'Downstream Lambda signal' error is present	Continue according to the instructions for the See table Z58 DOWNSTREAM LAMBDA SENSOR SIGNAL ERROR
			The 'Catalyzer' error only is present	Continue to Step 1
			Other errors present	Identify and eliminate the cause of the anomaly. Continue to Step 5
1	EXHAUST SYSTEM LEAKS CHECK	All OK	Problems met	Operation
	Look and listen to check the exhaust system from the cylinder head outlet to the downstream lambda probe. Check that there are no leaks	Continue to Step 2	There are leaks	Restore the exhaust system seal and replace the affected parts if necessary Continue to Step 5
2	ROAD TEST TO CHECK MIXTURE STRENGTH	All OK	Problems met	Operation
	Road test the vehicle and check the mixture strength in the 1st and 2nd closed loops using the diagnostic equipment. Check that the activation is correct	Continue to Step 3	The 1st closed loop activation is not correct	Continue according to the instructions for the See table Z56 UPSTREAM LAMBDA SENSOR SIGNAL ERROR
		Continue to Step 3	The 2nd closed loop activation is not correct	Continue according to the instructions for the See table Z58 DOWNSTREAM LAMBDA SENSOR SIGNAL ERROR
3	CHECKING INLET AND EXHAUST SYSTEM SEAL	All OK	Problems met	Operation
	Check the exhaust system visually and by listening, to check that there are no leaks from the cylinder head outlet to the upstream lambda sensor	Continue to Step 4	Seal not correct	Restore system seal and replace the affected parts if necessary Continue to Step 5
4	REPLACING THE CATALYZER	All OK	Problems met	Operation
	Replace the catalyzer Op. 1080B62	Continue to Step 5
5	DELETING AND CHECKING ERROR	All OK	Problems met	Operation
	Use a tester to cancel the errors in the control unit. Carry out a road test and ensure the error does not recur	Continue to Step 6	The fault persists, it is the first time that this step has been reached and the catalyzer has not yet been replaced	Continue to Step 0
		Continue to Step 6	The fault persists, but it is the second time that this step has been reached or the catalyzer has already been replaced	Contact Technical Support for further information on the problem
6	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists

‹ Prev Misfire error in one cylinder Next › Upstream lambda sensor signal error

Parts & tools for this job Staging For 2000 Fiat Doblò

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