22 · Diagnostics

Mixture strength error

Fault diagnosisMixture strength error

MIXTURE STRENGTH ERROR

The diagnostic equipment signals the following error: Mixture strength

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 'Mixture strength' error only		'Upstream lambda probe' error present	See table Z53 MISFIRE ERROR
			Only the 'Mixture strength', 'Misfire', 'Catalyzer' and/or 'Downstream Lambda signal' errors are present	Continue to Step 1
			Other errors present	Identify and eliminate the cause of the problem
1	ERROR DETAIL CHECK	All OK	Problems met	Operation
	Check the detail of the 'Mixture strength' error	End of diagnosis	The detail is 'Rich system'	See table Z51 RICH FUEL SYSTEM
			The detail is 'Idle too rich'	See table Z51 RICH FUEL SYSTEM
			The detail is 'Lean system'	See table Z52 LEAN FUEL SYSTEM
			The detail is 'Idle too lean'	See table Z52 LEAN FUEL SYSTEM

The diagnostic equipment signals the following error: Mixture strength

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 'Mixture strength' 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
			Only the 'Mixture strength', 'Misfire', 'Catalyzer' and/or 'Downstream Lambda signal' errors are present	Continue to Step 1
			Other errors present	Identify and eliminate the cause of the problem
1		All OK	Problems met	Operation
	Check the plausibility of the MAP sensor signal.	Continue to Step 2	The signal is not plausible	Replace the sensor Op. 1056B44
2		All OK	Problems met	Operation
	Check the detail of the 'Mixture strength' error	End of diagnosis	The detail is 'Rich system'	Continue according to the instructions for the See table Z51 RICH FUEL SYSTEM
			The detail is 'Idle too rich'	Continue according to the instructions for the See table Z51 RICH FUEL SYSTEM
			The detail is 'Lean system'	Continue according to the instructions for the See table Z52 LEAN FUEL SYSTEM
			The detail is 'Idle too lean'	Continue according to the instructions for the See table Z52 LEAN FUEL SYSTEM

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