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JamesV70R · Jan 17th, 2011, 14:14

Why oh why! I replaced the sensor on Saturday, did about 45 miles since then - all with no light and lovely and smooth - and as I pulled in to Shell at lunch the damn light came on again!!!

Got home and read the codes - 1133 - O2 Sensor Insufficiant Switching (Bank 1 Sensor 1)

Right people, I need thoughts. What can be causing this. Its NOT the Front 02 Sensor - as I say its got 45 miles under its belt and is brand new Bosch.

Am ordering new spark plugs today - wouldnt be surprised if they are fouled, but what else can cause 02 sensors to throw up that fault?

Cheers,

James - Coming to the end of my patience!

Jan 17th, 2011, 14:14	#1
JamesV70R Forum Support Team Last Online: Jun 11th, 2024 17:10 Join Date: Aug 2009 Location: Watford	Grrrrrrr. Lambda Sensors Why oh why! I replaced the sensor on Saturday, did about 45 miles since then - all with no light and lovely and smooth - and as I pulled in to Shell at lunch the damn light came on again!!! Got home and read the codes - 1133 - O2 Sensor Insufficiant Switching (Bank 1 Sensor 1) Right people, I need thoughts. What can be causing this. Its NOT the Front 02 Sensor - as I say its got 45 miles under its belt and is brand new Bosch. Am ordering new spark plugs today - wouldnt be surprised if they are fouled, but what else can cause 02 sensors to throw up that fault? Cheers, James - Coming to the end of my patience!