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P0141 and P0161: TYPICAL ENABLING CONDITIONS TYPICAL MALFUNCTION THRESHOLDS P0037 and P0057: TYPICAL MALFUNCTION THRESHOLDS P0038 and P0058: TYPICAL MALFUNCTION THRESHOLDS P0141 and P0161 (Heater performance monitor check) TYPICAL MALFUNCTION THRESHOLDS COMPONENT OPERATING RANGE COMPONENT OPERATING RANGE MONITOR RESULT Refer to CHECKING MONITOR STATUS . WIRING DIAGRAM Refer to DTC P0136 . One of the following conditions is met: Condition A or B A. All of the following conditions are met: Condition 1, 2, 3,4 and 5 1. Battery voltage 10.5 V or more 2. Fuel cut OFF 3. Time after fuel cut ON to OFF 30 seconds or wore 4. Accumulated heater ON time 100 seconds or more 5. Learned heater OFF current operation Completed B. Duration that rear heated oxygen sensor impedance is less than 15 kohms 2 seconds or more Heater current Less than 0.3 A One of the following conditions is met: Condition A or B A. Learned heater OFF current More than 2 A B. Hybrid IC high current limiter port Fail Accumulated heater resistance Varies with sensor element temperature (Example: More than 23 ohms) Heated Oxygen (HO2) sensor 0.4 to 1 A (when engine idles, HO2 sensor warmed up and battery
2008 Toyota Tundra 2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra
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