Possible Causes
WARNING: This page is about a different car, the 2002 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
Possible causes are:
- Bank 1 HO2S No. 1 heater circuit malfunction.
- Bank 1 HO2S No. 1 heater malfunction.
- ECM malfunction.
- HO2S heater relay.