DTC Detecting Condition and Trouble Area

WARNING: This page is about a different car, the 2006 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTING CONDITION CHART

DTC detecting condition	Trouble area
DTC P2627 O2 Sensor Pumping Current Trim Circuit Low (Sensor-1, Bank-1): Output voltage of A/F sensor adjusting resister is less than 0.1 V for more than 4 sec. continuously with engine running. (1 driving cycle detection logic) DTC P2628 O2 Sensor Pumping Current Trim Circuit High (Sensor-1, Bank-1): Output voltage of A/F sensor adjusting resister is more than 5 V for more than 4 sec. continuously with engine running. (1 driving cycle detection logic)	A/F sensor malfunction A/F sensor circuit malfunction ECM

DTC detecting condition

Trouble area

DTC P2627 O2 Sensor Pumping Current Trim Circuit Low (Sensor-1, Bank-1):
Output voltage of A/F sensor adjusting resister is less than 0.1 V for more than 4 sec. continuously with engine running.
(1 driving cycle detection logic)
DTC P2628 O2 Sensor Pumping Current Trim Circuit High (Sensor-1, Bank-1):
Output voltage of A/F sensor adjusting resister is more than 5 V for more than 4 sec. continuously with engine running.
(1 driving cycle detection logic)

A/F sensor malfunction
A/F sensor circuit malfunction
ECM