Code P0038 indicates heated oxygen sensor heater control circuit high. This code is for the downstream o2 sensor, the one after the catalytic converter. Make sure you replace it with an OEM oxygen sensor, not an aftermarket one.
Mar 4, 2013 at 9:45 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.