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Wayne Crawford
Wayne Crawford, Shop Owner
Category: Mazda
Satisfied Customers: 4017
Experience:  General Repair Shop Owner
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Tribute v6: , I have a 2008 Mazda Tribute v6. Battery went

Customer Question

Hi, I have a 2008 Mazda Tribute v6. Battery went completely dead and needed to be replaced. I need to perform a smog check but a tech checked the car and said that it will fail the smog check due to some monitors not being ready. He mentioned O2, O2 Heater and Catalyst sensors not ready. EVAP and EGR are ready. I have drive car about 300 miles since the battery replacement, but monitors are still not ready.
I have tried various driving cycle patterns that I found, but none of them worked.
So my question is: is there a known driving pattern that will set monitors to ready state?
Submitted: 2 years ago.
Category: Mazda
Expert:  Wayne Crawford replied 2 years ago.
Hello. My name is ***** ***** I will be helping you today.I am attaching the drive cycle for this vehicle.If any drive cycle will work this one will. This is straight from mazda for your specific vehicle. If that doesnt work I would suspect a questionable o2 sensor.
Customer: replied 2 years ago.
I have already tried this drive cycle and monitors are still not ready.
Expert:  Wayne Crawford replied 2 years ago.
What are your oxygen sensor readings?
Customer: replied 2 years ago.
The car was sitting for a few hours. Initial readings were 0 for Bank 1 and 2, and for sensor 1 and 2 of each bank. After engine run for few minutes readings were changing. Bank 1 Sensor 1 - 0.57 Bank 1 Sensor 2 - 0.295, Bank 2 Sensor 1 - 0.375, Sensor 2 - 0.54 But this values were changing every few seconds
Expert:  Wayne Crawford replied 2 years ago.
Hold the RPMS at about 1500 for a minute while monitoring them and tell me what they are switching between.
Customer: replied 2 years ago.
I can see only 2 of the sensors at the same time. I started the car and let it idle for about 1 minute, then I have connected the scan tool. Sensor 1 Bank 1 0.19 - 0.64 - 0.580 Sensor 1 Bank 2 0.05-0.625-0.575 Sensor 2 Bank 1 0.805-0.820-0.425 Sensor 2 Bank 2 0.595-0.6-0.32
Expert:  Wayne Crawford replied 2 years ago.
Have you had any work done on this recently?
Customer: replied 2 years ago.
No, nothing major was done to the vehicle. My A/C also quit working even though it works when coil is activated by bypassing relay. I am beginning to suspect that there is something going on with the PCM.

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