Lotus 2004 Eleven Service Notes page 162

Lotus Service Notes
Potential failure modes:
• Check and rectify any front sensor fault code, as they may be causing the fault code to be set
• Catalyst
P0139
Set when the sensor fails to reach 650mV after 1.9 seconds of P.E or when the sensor fails to drop below
150mV after 5 seconds of DFCO ('06 M.Y.; Set when sensor fails to switch between 250mV and 650mV with
sufficient rapidity).
Enable Criteria:
• Engine run time > 200 seconds
• Coolant temperature > 60°C (140°F)
• Open loop fuel control
• DFCO (Deceleration Fuel Cut Off) followed by idle operation for 'lean to rich' switch
• DFCO for 'rich to lean' switch
Disable Criteria:
P0116, P0117, P0118
P0201, P0202, P0203, P0204
P0300, P0301, P0302, P0303, P0304 – Misfire faults
P1301, P1302
Monitor: Continuous, until the test is either passed or failed
Potential failure modes:
• Check and rectify any pre catalyst sensor fault code, as they may be causing the fault code to be set
• Catalyst
P0140
Set when the sensor fails to switch above 557mV and below 400mV within 60 seconds.
Enable Criteria:
• Engine run time > 30 seconds
• Engine is not at idle
• Engine is in closed loop fuel control
Monitor: Continuous
Potential failure modes:
• Check and rectify any front sensor fault code, as they may be causing the fault code to be set
• Sensor connector and wiring should be checked for corrosion and loose connections
• Catalyst
P0141
Set when the sensor output is greater than 1900mA or less than 250mA for 1.5 seconds, for 40 consecutive
checks.
Enable Criteria: Engine run time > 60 seconds
Monitor: Continuous
Potential failure modes:
Sensor connector and wiring should be checked for corrosion and loose connections
Notes:
• The MIL will be illuminated if the fault is present for 2 consecutive trips.
• Further information on the sensor may be found in Toyota 1ZZ-FE, 2ZZ-GE manual RM733E (B120T0327J)
pages DI-63 to DI-66
– Coolant Temperature Sensor faults
– Injector faults
– Misfire faults causing emission or catalyst damage
Section EMP
Page 19