Questionthe check engine light is on and the codes is for a oxygen sensor and now my heater only blows cold air is this related
AnswerHi Tammy,
No these are unrelated. The oxygen sensor problem should be dealt with separately from the heater. If you will tell me which code number came out, and which engine you have I can tell you how to replace the sensor if you want to do it yourself.
There is a self-diagnostic capability in the heater control panel but first I would suggest that you remove the "IOD" fuse (probably #28, at the rear of the fuse/relay box under the hood, next to the battery) for a couple of minutes. Then start the van and drive it for a bit to see if that corrects the problem. Removing the fuse will cause the system to re-calibrate the controls for the AC/heater. If that doesn't correct it, then you can do the self-diagnostics:
I am handicapped in only having a manual for the '98 model, but that one has a self-diagnostic capability to test the calibration of all the actuators and assess the cooldown capability of the system. The test may well be available also in your 2001, but I can't guarantee it.
Starting the tests is fairly straight forward, but following up on any faults requires further action/interprestation of the way the lights are flashing at the conclusion of the first test. All the possibilities cover about 6+ pages in the manual.
But let us give it a try. The engine must be running. Set the blower on HIGH, set mode to the PANEL position, open all AC outlets, Set temperature slide pot(s) to COLD, Depress WASH and REAR WIPER simultaneously for 5 seconds (Until all LED's light). The LED's will stay on for 5 seconds. Calibration tests are running when the rear wiper and intermittent are alternatively flashing. Cooldown test is running when the A/C and recirc lights are flashing.
Acceptable result is when the rear wiper only LED is flashing.
Push rear wiper button to exit.
Interpretation of codes (presumably stored if you don't get the above result) is an involved process for which it would be better to xerox copy and postal mail you the pages.
So see whether your unit seems to behave according to what I have described, and please let me know.
Roland
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