2008 INFINITI QX56 Factory Service Manual

Page 1457 of 4083

INFINITI QX56 2008  Factory Service Manual EC-158
< COMPONENT DIAGNOSIS >[VK56DE]
P0133, P0153 A/F SENSOR 1
• Discard any air fuel ratio (A/F) sensor which has been dropped from a height of more than 0.5 m
(19.7 in) onto a hard surface such

Page 1458 of 4083

INFINITI QX56 2008  Factory Service Manual P0137, P0157 HO2S2EC-159
< COMPONENT DIAGNOSIS > [VK56DE]
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P0137, P0157 HO2S2
Component DescriptionINFOID:0000000001351486
The heated oxygen sensor 2, after three way ca

Page 1459 of 4083

INFINITI QX56 2008  Factory Service Manual EC-160
< COMPONENT DIAGNOSIS >[VK56DE]
P0137, P0157 HO2S2
9. Start engine and following the instruction of CONSULT-III.
NOTE:
It will take at most 10 minutes  until “COMPLETED” is displayed.
10. M

Page 1460 of 4083

INFINITI QX56 2008  Factory Service Manual P0137, P0157 HO2S2EC-161
< COMPONENT DIAGNOSIS > [VK56DE]
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2. Select “SELF-LEARNING CONT” in “W
ORK SUPPORT” mode with CONSULT-III.
3. Clear the self-learning co

Page 1461 of 4083

INFINITI QX56 2008  Factory Service Manual EC-162
< COMPONENT DIAGNOSIS >[VK56DE]
P0137, P0157 HO2S2
2. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK

Page 1462 of 4083

INFINITI QX56 2008  Factory Service Manual P0137, P0157 HO2S2EC-163
< COMPONENT DIAGNOSIS > [VK56DE]
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• Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool

Page 1463 of 4083

INFINITI QX56 2008  Factory Service Manual EC-164
< COMPONENT DIAGNOSIS >[VK56DE]
P0138, P0158 HO2S2
P0138, P0158 HO2S2
Component DescriptionINFOID:0000000001351495
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the

Page 1464 of 4083

INFINITI QX56 2008  Factory Service Manual P0138, P0158 HO2S2EC-165
< COMPONENT DIAGNOSIS > [VK56DE]
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If DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B.
NOTE:
If DTC Confirmation Procedure has been