P0051

273F - P0051

Information saved in
DME

Fault code
273F - P0051

Fault text
Oxygen sensor final stage diagnosis heater before cat.
converter, Bank 2

Fault description


Condition for fault identification
Test condition:
Designation - Driver info is present
Terminal condition: none
Voltage condition:
none

Condition for fault memory entry
Driver info includes short circuit to ground

Action in service
1. Check plug and wiring harness to pre-catalyst oxygen
sensor forward of Bank 2 catalyst
2. If OK, replace oxygen sensor

Fault effect and breakdown warning
MIL lamp lights up after engine runs 2X

Driver information
Warning light:
No

Service instruction
none