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Home >> Suzuki >> 2009 >> Equator Base, 4D Pickup Extra Cab >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Control System (VQ40DE) - (3 Of 5)) >> DTC P1148, P1168: Closed Loop Control
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DTC P1148, P1168: Closed Loop Control

WARNING: This page is about a different variant/trim than selected.

These self-diagnoses have the one trip detection logic. 

DTC DETECTING CONDITION AND POSSIBLE CAUSE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1148
1148 (Bank 1)
Closed loop control function The closed loop control function for bank 1 does not operate even when vehicle is being driven in the specified condition.
  • Harness or connectors [The air fuel ratio (A/F) sensor 1 circuit is open or shorted.]
  • Air fuel ratio (A/F) sensor 1
  • Air fuel ratio (A/F) sensor 1 heater
P1168
1168 (Bank 2)
The closed loop control function for bank 2 does not operate even when vehicle is being driven in the specified condition.

DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1.

Perform the trouble diagnosis for the corresponding DTC.