O2 parameters
Thread Starter
TECH Senior Member
iTrader: (4)
Joined: Dec 2003
Posts: 5,276
Likes: 1
From: Arlington TX
O2 parameters What are the parameters for the O2 sensors for the heaters? Mine throw a heater code very often and I'm trying to figure out the best way to fix it. I figure if I dust the parameters a little the computer will see it as working properly and keep the SES light off.
Someone suggested a wiring or relay issue but I don't know were to start taking the issue down. I figure if I can start logging my sensors I can see what they are doing in comparison to what the stock tune says it should be doing.
My mods are: ported TB, long tube headers, off road Y pipe, B&B exhaust, underdrive pulley... Stock tune
Someone suggested a wiring or relay issue but I don't know were to start taking the issue down. I figure if I can start logging my sensors I can see what they are doing in comparison to what the stock tune says it should be doing.
My mods are: ported TB, long tube headers, off road Y pipe, B&B exhaust, underdrive pulley... Stock tune
parameters A fault in the heated oxygen sensor heater element or its ignition feed or ground results in an increase in time to Closed Loop fuel control.
This voltage should constantly fluctuate from approximately 100 mV (high oxygen content = lean mixture) to 900 mV (low oxygen content = rich mixture). Check grounds or burnt wires and make shure your battery is good do a load test to check for amps thats where I would start
This voltage should constantly fluctuate from approximately 100 mV (high oxygen content = lean mixture) to 900 mV (low oxygen content = rich mixture). Check grounds or burnt wires and make shure your battery is good do a load test to check for amps thats where I would start
Thread Starter
TECH Senior Member
iTrader: (4)
Joined: Dec 2003
Posts: 5,276
Likes: 1
From: Arlington TX
I looked up the wiring schematic and it doesn't look too difficult. Too bad it won't be as easy once I get under the car.
So what's the parameters that cause the computer to throw the heater codes? Is it the amount of time it spends in open loop...?
So what's the parameters that cause the computer to throw the heater codes? Is it the amount of time it spends in open loop...?
Yes kinda it throws the code depending on the activity on cold starts if the sensor is above or below specs for an extended period of time it will set a light that reading is 450 millivolt.
