DTC Detecting Condition and Trouble Area

WARNING: This page is about a different car, the 2007 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTING CONDITION TABLE

DTC detecting condition	Trouble area
DTC P2238 O2 Sensor Positive Current Control Circuit Low (Sensor-1, Bank-1): Circuit voltage of A/F sensor (+) terminal is lower than 0.4 V or A/F sensor circuit is short between (+) terminal wire and (-) terminal wire with engine running. (1 driving cycle detection logic) DTC P2239 O2 Sensor Positive Current Control Circuit High (Sensor-1, Bank-1): Circuit voltage of A/F sensor (+) terminal is higher than 4.4 V with engine running (1 driving cycle detection logic)	A/F sensor circuit A/F sensor ECM

DTC detecting condition

Trouble area

DTC P2238 O2 Sensor Positive Current Control Circuit Low (Sensor-1, Bank-1):
Circuit voltage of A/F sensor (+) terminal is lower than 0.4 V or A/F sensor circuit is short between (+) terminal wire and (-) terminal wire with engine running.
(1 driving cycle detection logic)
DTC P2239 O2 Sensor Positive Current Control Circuit High (Sensor-1, Bank-1):
Circuit voltage of A/F sensor (+) terminal is higher than 4.4 V with engine running
(1 driving cycle detection logic)

A/F sensor circuit
A/F sensor
ECM