Remove front fender splash shield sub-assembly lh Remove front fender splash shield sub-assembly rh Remove no. 1 engine under cover sub-assembly Remove upper radiator support seal Drain engine coolant Remove v-bank cover Remove no. 2 air cleaner hose

Remove front fender splash shield sub-assembly lh Remove front fender splash shield sub-assembly rh Remove no. 1 engine under cover sub-assembly Remove upper radiator support seal Drain engine coolant Remove v-bank cover Remove cowl top ventilator louver sub-assembly Remove no. 2 air cleaner hose

DTC P2238 Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1). DTC P2239 Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1). DTC P2252 Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1). DTC P2253 Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1). Description. Monitor description. Wiring diagram. Inspection procedure.

DTC P2A00 A/F Sensor Slow Response (Bank 1 Sensor 1). Description. Description of the monitor. Trip in test mode. Connection diagram. Check sequence.

HINT: If there are no malfunctions during the inspection of parts, check the ECU of the anti-skid system and the contact of the connection points with the ground. If an error code appears on the display when checking for errors, check the corresponding circuit shown in the following table. A description of each error code is provided on the specified page. If 2 or more error codes are registered, check the circuits sequentially until the fault is identified. All error codes in the following table are registered in accordance with the diagnostic logic for 1 trip.

DTC C1201 Malfunction of the engine management system. Description. Inspection procedure.

DTC P0420 Catalyst System Efficiency Below Threshold (Bank 1) Description Confirmation driving pattern Conditioning for sensor testing Inspection procedure Check any other dtcs vnosteyoutput (in addition to dtc p0420)

DTC P0171 System Too Lean (Bank 1) DTC P0172 System Too Rich (Bank 1) Description Monitor description Wiring diagram Inspection procedure

Parameters listed in the chart may be different from your readings depending on the type of instruments and other factors. If any DTCs are displayed during a check mode, check the circuit for the DTCs listed in the chart below. For details of each DTC, refer to the page indicated.