DPs detected by JB4, No CEL

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		BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Technical Topics > Engine / Drivetrain / Exhaust / Bolt-ons / Tuning
DPs detected by JB4, No CEL

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11-10-2019, 11:43 AM	#1
will0621 First Lieutenant 477 Rep 359 Posts Drives: 21 M5c, 20 X3MC, 20 X5 40i Join Date: Oct 2018 Location: PA iTrader: (5)	DPs detected by JB4, No CEL I recently installed DPs with defoulers, had no CEL for about 800 miles. Recently however the CEL came on. I was going to put the car up and take a look/adjust the defoulers but the CEL went away after about 20-30 miles with normal driving. The CEL has not been back since, but I noticed now in the JB4 app it’s still picking up code 180101 for bank2. This is with new firmware so I don’t believe the CEL is being suppressed. Has anyone dealt with no CEL but positive codes in Jb4 and if this has any significance? Thanks
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