2003 HONDA ACCORD CODE P2251 AND P0138

  • Tiny
  • nabeel
  • 2003 Honda Accord

Engine Mechanical problem
2003 Honda Accord 6 cyl Front Wheel Drive Automatic

My car has 47K on it and the check engine light came on on the code reader it gives 2 codes first p2251 and then p0138 I would like to know the location of these o2 sensors.

Sunday, January 4th, 2009 AT 3:41 PM

1 Answer

  • Tiny
  • KHLow2008
  • Expert
  • 41,938 posts

Hi nabeel,

DTC P2251: REAR A/F SENSOR (BANK 1, SENSOR 1) VS LINE HIGH VOLTAGE

DTC P0138: REAR SECONDARY HO2S (BANK 1, SENSOR 2) CIRCUIT HIGH VOLTAGE (2005-2007 MODELS)


http://www.2carpros.com/forum/automotive_pictures/192750_CompLoc03Accord04_1.jpg



http://www.2carpros.com/forum/automotive_pictures/192750_CompLoc03Accord05_1.jpg

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Saturday, January 10th, 2009 AT 8:38 AM

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