HX Wideband Conversion
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Joined: Mar 2007
Posts: 276
From: Arlington, VA
HX Wideband Conversion
I recently converted my 98 HX CVT to a 5 speed. The CVT ECU uses a regular 4-pin O2 sensor (pre-cat). The new 5-speed ECU, however, is expecting a 5-pin wideband connection from the O2 sensor. As a result, I'm throwing a CEL [P1166 Heated Oxgen Sensor Sensor1 (Primary HO2S) Heater Circuit Malfunction]. My gas mileage is horrible and so is my car's performance.
It seems to me that my only option is to replace the portion of the engine harness that the O2 sensor connects to AND buy a wideband o2 sensor ($400 at O'Reilly's).
Am I missing something? Is there some way to trick the ECU? I've got an O2 sim on my after-cat sensor, but I don't think they make anything like that for the pre-cat O2 sensor. Any input would be greatly appreciated...I hoping to avoid spending $400 on an O2 sensor. Thanks!
It seems to me that my only option is to replace the portion of the engine harness that the O2 sensor connects to AND buy a wideband o2 sensor ($400 at O'Reilly's).
Am I missing something? Is there some way to trick the ECU? I've got an O2 sim on my after-cat sensor, but I don't think they make anything like that for the pre-cat O2 sensor. Any input would be greatly appreciated...I hoping to avoid spending $400 on an O2 sensor. Thanks!
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