Code 21
Problem with O2 Sensor feedback circuit. Logic Module monitors circuit when engine temperature is above 180°F and engine speed above 1500 RPM for 6 minutes. Code appears if there has been no O2 signal for more than 5 seconds.
Problem with O2 Sensor feedback circuit. Logic Module monitors circuit when engine temperature is above 180°F and engine speed above 1500 RPM for 6 minutes. Code appears if there has been no O2 signal for more than 5 seconds.