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21st March 2019, 22:02 | #1 |
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2005 MG ZT-T+ V6 190 Join Date: Jun 2015
Location: Hereford
Posts: 474
Thanks: 126
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O2 Sensor Fault Messages
Hi guys, I wonder if anyone can help me determine which oxygen sensor I need to replace. The dreaded 'check engine' light popped up a couple of days ago, my OBD scanner flagged up codes P0141 and P0155. These are O2 Sensor Heater Circuit Bank 1 Sensor 2 and O2 Sensor Heater Circuit Bank 2 Sensor 1. I can clear the codes, but they return within one or two drives. With the engine running and monitoring the live data I can see the values for each sensor changing with engine speed (i.e. sensors not open/short circuited).
I find it unlikely that both sensors have failed at the same time, so can anyone suggest which sensor I should go for, also the locations of these sensors (which is which) and any other potential cause of these fault codes (for example a common voltage supply). Thank you in advance.
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7,925th ZT-T to run off the production line, out of 8,249 The 1,709th ZT-T 190 + to be made out of 1,756 The 103rd ZT-T in Mica Blue (Ignition) (code: JGY) to be made out of 160 Mica Blue (Ignition) ZT-Ts |
21st March 2019, 22:09 | #2 |
Posted a thing or two
Rover 75 Connie Mk2 1.8 (Mo) Join Date: Feb 2017
Location: Sheffield
Posts: 1,531
Thanks: 875
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Hi,
Mo has a similar problem. Her exhaust pipe sensor is missing since a previous owner had a new pipe fitted and they forgot to put a hole in it for the sensor. Pretty sure that was Bank 1, sensor 2. An expert will be along shortly
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Mo was born Tuesday, 22nd June 2004 @ 08:32:41 This vehicle was the 99,307th 75 to run off the production line, out of 112,381 This vehicle was the 5,377th 75 1.8 Connoisseur to be made out of 6,033 This vehicle was the 783rd 75 in Firefrost Red (code: CEV) to be made out of 2,089 Firefrost Red 75s |
22nd March 2019, 10:01 | #3 | |
Avid contributor
Rover 75 Tourer 2.0 V6 LPG Join Date: Apr 2018
Location: Colchester
Posts: 210
Thanks: 4
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Quote:
Last edited by Bullnose75; 22nd March 2019 at 10:03.. Reason: miss spelled |
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