Lotus Evora - Page 104

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Lotus Service Notes Section EMR
Malfunction Criteria P0172, P0175:
• Thesecodeswillbesetwhentherelevantbanklearnedfuelcorrectionhasbeendecreasedtoitsminimum
limit of -25% and the system still cannot maintain an air/fuel ratio of 14.7:1 under normal driving conditions.
• Thesecodeswillalsobesetiftherelevantbankfuellearninjectordeadtimeislessthan-450microsec-
onds.
Potential failure modes:
• Fuelpressuretoohigh
• Leakingfuelinjector
• Restrictionintheexhaustsystemorairintake/filter
• Erraticthrottlepositionsensor
• MAFfault
• O2sensorfault
• Ignitionfault
Diagnostic Mask:
• TheMILwillbeilluminatedifafaultispresentfortwoconsecutivetrips.
2009/02