P1186

System/Component
Oxygen Sensor (2) (downstream Cat.-system) cylinder 1-3

Fault Code
P1186 Heater power

Fault Type
Plausibility Yes
Signal No
Minimum Threshold No
Maximum Threshold No

Monitoring Method
Plausibility check

Signal Type
ECM internal signal/value computation or comparison

Operating Range
Coasting/fuel cut-off

Time Length and Frequency for Monitoring/Diagnosis
2.5 sec/once per trip

Criteria for storing fault code
fault during 2 trips

Criteria for illuminating the MIL
fault during 2 trips and end of 2nd trip

Criteria used for determining out of range values and input component rationality check
UBATT No
Ground No
Disconnect No

Electronic Control Module (ECM)
reaching voltage limit of 4.88V when heating while A/F ratio is lean