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Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines. |
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XC70 D5 Heated Oxygen Sensor FaultViews : 1121 Replies : 2Users Viewing This Thread : |
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Aug 24th, 2019, 18:51 | #1 |
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Last Online: Mar 4th, 2021 16:25
Join Date: Jul 2019
Location: Leeds
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XC70 D5 Heated Oxygen Sensor Fault
Hi guys,
Driving the car today I got a message on the dash "engine system service required" No loss of power or ill effects just the warning message. got home and plugged her into Vida and it is showing a new code ECM-2850 - Heated oxygen sensor (HO2S) - Signal too high did the usual googling but not finding any forum posts with my specific error, or much on google at all to be honest, so looking into the vida replacement instructions looks like a small sensor that goes into the exhaust. had a crawl under the car and think i found the sensor couldnt see anything obvious like freyed cables but also couldnt see or get to the plug end without jacking it up. She has her MOT in oct so was thinking to just get it replaced when i take it in are there any ill effects to driving the car with this error, don't want to end up causing some other problem by ignoring it until i take it in.
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------------------------------------------- Nate Volvo XC70 2.4 D5 2006 Volvo S40 1.6D 2006 |
Aug 25th, 2019, 07:22 | #2 |
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Last Online: Yesterday 07:47
Join Date: Jan 2015
Location: Blackpool
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Morning , your code is usually down to a duff sensor & occasionally faulty wiring .
A good diagnostic machine live data read will tell you which sensor if the culprit , replace & all should be right with your world again . Live data allows you to compare the values generated by the Lambda sensor/s
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Aug 25th, 2019, 17:50 | #3 |
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Last Online: Mar 4th, 2021 16:25
Join Date: Jul 2019
Location: Leeds
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Thanks I took it to the volvo 600 meet in cosforth today so a 200+ mile round trip and it was fine, I'll get it fixed when I take it for mot
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------------------------------------------- Nate Volvo XC70 2.4 D5 2006 Volvo S40 1.6D 2006 |
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