Lotus Evora Service Notes page 104

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.
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2009/02