P0137

272A - P0137

Information saved in
DME

Fault code
272A - P0137

Fault text
Oxygen sensor, signal behind cat., bank 1

Fault description
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

Condition for fault identification
Test condition:
Oxygen sensor voltage lank_us_b1 < 10mV
(K_LANK_DIAG_UMIN) for 20 sec.
(K_LANK_DIAG_GND_T)
Terminal condition: Engine running
Voltage condition:
Battery voltage > 9V (k_ed_ubmin)

Condition for fault memory entry
Depends on processing load

Action in service
1. Check plug and wiring harness on post-cat oxygen sensor
LSNK B1,
2. If OK replace sensor

Fault effect and breakdown warning
MIL on after engine runs 2x

Driver information
Warning light:
MIL

Service instruction
none