Audi P1198: O2 Sensor Heater Circuit (Bank 1-Sensor 2) Electrical Malfunction

Is your scanner showing Audi P1198?
No worries. We'll show you what it means and how to deal with it.

Presented by

Randy Worner

00:00/00:00

Audi P1198: O2 Sensor Heater Circuit (Bank 1-Sensor 2) Electrical Malfunction

OVERVIEW

Severity

High

DIY Difficulty Level

Intermediate

Repair Cost

$100-$300

Can I Still Drive?

Yes

What Does The Audi P1198 Code Mean?

Engine started, battery voltage must be at least 11.5v, all electrical components must be off, the ground between the engine and the chassis must be well connected, the exhaust system must be properly sealed between the catalytic converter and the cylinder head, and the oxygen sensor heater for oxygen sensor before the catalytic converter must be properly functioning.

Note: For resistance testing of sensor heating, oxygen sensor should be cooled to ambient temperature. High temperatures at oxygen sensor may lead to inaccurate measurements. The ECM detected an open or shorted condition, or excessive current draw in the heater circuit.