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ECM - 2810 code problem

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo's stylish, distinctive P2 platform cars sold as model years 2001-2007 (North American market year designations).

2001 - 2007 V70
2001 - 2004 V70 XC (Cross Country)
2004 - 2007 XC70 (Cross Country)
2001 - 2009 S60
2003 - 2007 S60 R
2004 - 2007 V70 R
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dneu
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Joined: 13 October 2014
Year and Model: 2004 V70R
Location: Pottsville, Pennsylvania
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ECM - 2810 code problem

Post by dneu »

Hello, a scanner points me to the upstream OS preheater. I have replaced the sensor and the code still comes out. Where should I look? Thanks
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RickHaleParker
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Post by RickHaleParker »

dneu wrote: ↑29 Nov 2021, 20:56 Where should I look? Thanks
Look in the O₂ Sensor wiring for shorts, opens and connector problems.
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1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
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