volvo Workshop Repair Guides

Volvo Workshop Service and Repair Manuals

Engine Controls - DTC's 280A/260A/261A/262A/2A1A Set|Page 17494 > < Oil Pressure Sensor|Description and Operation
Page 1
background image

Oxygen Sensor: Customer Interest
Engine Controls - DTC's 280A/260A/261A/262A/2A1A Set

S70/70 -2000/C70
1999-2002

Section:
2

Group:
25

No.:
0033

Year:
02

Month:
09

Vehicles involved: 
B52X4 Turbo

Heated oxygen sensor (HO2S), replacing

Background

To prevent contamination from affecting the reference air for the heated oxygen sensors (HO2S) new routing has been developed for the sensor wiring.
The following diagnostic trouble codes (DTCS) could be stored in the engine control module (ECM) due to harness contamination: 280A, 260A, 261A,
262A, 2A1A. Should no faults be detected for these DTCs after fault tracing according to VADIS, replace the effected heated oxygen sensors (HO2S)
and install adaptor wiring harness The new adaptor wiring harness must also be installed for the remaining sensor.

Affected cars

Material

Catalytic converters and emissions equipment

Heated oxygen sensor (HO2S), replacing

Engine Controls - DTC's 280A/260A/261A/262A/2A1A Set|Page 17494 > < Oil Pressure Sensor|Description and Operation