H02 sensor drive cycle test interval.
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 1,207
Likes: 147
From: St. Louis MO
H02 sensor drive cycle test interval.
I was receiving code P0054 H02S heater resistance, Bank 1 Sensor 2.
Believing I have addressed a problem with the downstream H02 sensor extension cable, I reset the DTC code with my AutoEngunity ObdII Scanner.
I cannot find much information on this system, and I want to know how long it will be before I can be assured I have trouble-shot the problem and the code will not return.
Question: How many drive cycles, or after what conditions will the ECM retest the H02S heater circuit?
Thank you.
Believing I have addressed a problem with the downstream H02 sensor extension cable, I reset the DTC code with my AutoEngunity ObdII Scanner.
I cannot find much information on this system, and I want to know how long it will be before I can be assured I have trouble-shot the problem and the code will not return.
Question: How many drive cycles, or after what conditions will the ECM retest the H02S heater circuit?
Thank you.
Former Vendor
Joined: Feb 2007
Posts: 2,572
Likes: 1
From: Austin Texas
From what I have seen and experienced, the heater circuit should clear within 2 ignition cycles. The sensor needs to cool down for the second cycle. It is quicker to clear than the O2 sensor readiness test.
More info here: http://gearchatter.com/viewpost17815.php
More info here: http://gearchatter.com/viewpost17815.php
Thread Starter
Burning Brakes
Joined: Aug 2004
Posts: 1,207
Likes: 147
From: St. Louis MO
>>"the heater circuit should clear within 2 ignition cycles"<<
Sorry, not even close. My Vette failed the emmissions OBDII test today.
02 Sensor test = Not completed.
02 Sensor Heater = Not completed.
Even though I had more than 5 startup cycles. Chevy dealer said it could take over 100 miles for the car to complete all the tests normally. To help, he spelled out a drive cycle that will help the ECM set all the flags sooner.
Sorry, not even close. My Vette failed the emmissions OBDII test today.
02 Sensor test = Not completed.
02 Sensor Heater = Not completed.
Even though I had more than 5 startup cycles. Chevy dealer said it could take over 100 miles for the car to complete all the tests normally. To help, he spelled out a drive cycle that will help the ECM set all the flags sooner.
