fault code

[bez101]

17606 - Oxygen (Lambda) Sensor Heater Circuit: B1 S2
P1198 - 35-00 - Electrical

from vcds wiki
17606/P1198 - Oxygen (Lambda) Sensor Heater Circuit: B1 S2: Electrical Malfunction Possible Causes

• Failed O2 sensor heater circuit
• Wiring Harness issue
• Failing ECM

Possible Solutions

• Inspect and test O2 sensor heater circuit as per repair manual
• Inspect and test wiring harness as per wiring diagram
• Replace ECM if O2 sensor and wiring harness are to factory design

whats the ECM ?

[murran]

engine control modual. ecu basically.

you need a new lambda sensor most likely. check the resistance thru the heater circuit on the sensor itself.

[bez101]

cheers murran
would that be the pre cat lambe or the 1 after the cat ?

[murran]

b1 s2 it says.... s2 = sensor 2 = post cat sensor.

s1 being the pre cat sensor.