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Duty cycle of O2 sensor heater
What is the duty cycle of the rear O2 sensor heater and how is it determined? The B+ is supplied by the ignition switch and the ground by the PCM. I'm going to set up test lights or meters for the customer to observe these inputs when the PO1141 code sets and ... Login to read more. 
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| Engine | 1.8 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
2000 Mazda Protege ES 1.8L
| Engine | 1.8 L |
| Trans | 4-speed Automatic (Electronic) |
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