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07 Frontier 4x4 L/B Crew Engine Code P2A00 Forums > > 07 Frontier 4x4 L/B Crew Engine Code P2A00 07 Frontier 4x4 L/B Crew Engine Code P2A00
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Frontier Nissan Frontier/HB/Truck Discussion Forum

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  #1  
Old 05-11-2012, 06:49 AM
crankshaftdan II crankshaftdan II is offline
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2007 Frontier Crew Cab
 
Join Date: Apr 2012
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Default 07 Frontier 4x4 L/B Crew Engine Code P2A00

Have previously replaced driver's side pre-cat o2 sensor from code P0440 six months ago. Used the same brand as original and was good to go for several months. Had another episode of low speed torque converter lock-up/judder @35+ mph(Been going on and off for five years) took to another dealer & they diagonised it and replaced the tranny & fluids. Code P2A00 poped up prior to tranny issue and would reappear after 2 drive cycles or approx. 85 miles--erased code and it keeps comming back?? Anyone else experienced this code and figured out what the issue/s are to be corrected? Any help appreciated--maybe I'm doing the wrong things? Cranky
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Old 05-11-2012, 07:38 AM
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mpe235 mpe235 is offline
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2015 Rogue
 
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Code P0440 is an evap system leak code. P2A00 is a/f sensor B1. It could be a bad sensor or an exhaust leak. Check the flange on the front exhaust tube where it bolts to the converter.The flanges usually rust apart at the weld and cause an exhaust leak which can cause that code.
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Old 05-11-2012, 08:13 AM
crankshaftdan II crankshaftdan II is offline
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Default P2a00 code

Quote:
Originally Posted by mpe235 View Post
Code P0440 is an evap system leak code. P2A00 is a/f sensor B1. It could be a bad sensor or an exhaust leak. Check the flange on the front exhaust tube where it bolts to the converter.The flanges usually rust apart at the weld and cause an exhaust leak which can cause that code.
Will check the flange connections--also cleaned and checked the MAF sensor again-voltage checks out OK. Thanks
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