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Reno Automatic
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Engine Control Systems
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Engine - Diagnostic Codes (1 Of 4)
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DTC P0135: HO2S Heater Performance Sensor 1
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Conditions for Setting the DTC
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Conditions for Setting the DTC
Engine run time is greater than 60 seconds.
Heater duty cycle commanded is greater than 0.1%.
Max-Min commanded duty cycle is less than 0.05%.
Filtered O2 heater current is greater than 0.025 A.