How to reset Porsche 997 Check Engine light on

One Porsche 997 2009 year with 52 thousands KM, the driver owner described: the check engine light always on.This article share the way to reset Porsche 997 Engine light on.

Trouble diagnosis: I connect Piwis Tester II to the vehicle and read out these trouble codes:

Porsche PIWIS 2 V18.15 V17.500 Free Download

P0171: System too Lean (Bank 1)

P2195:  O2 Sensor Signal Stuck Lean Bank 1 Sensor 1

P2414: O2 Sensor Exhaust Sample Error Bank 1 Sensor 1; V424 received from the HVAC control unit data is invalid; V0101 Communication transmission control unit.

P1628:  Transmission control unit communication

P1619: Communication transmission control unit

 

Read out the real data: as the real data described, the O2 Sensor Bank 1 display mixture too lean, the fuel close to idling of Bank 1 correct adapt (RKAT) to 3%, O2 Sensor 1 still display mixture too lean (as the following table shows), so the control unit display the above-mentioned trouble codes.

 

Table 1

Serial Number	Data	Range	Before repair	After repair
L010	Fuel Correction Average Value	Bank 1	13.5%	-1%-0.8%
L020	Fuel Correction Average Value	Bank 2	-0.97%~0.91%	-1%~0.29%
L070	O2 Sensor	Bank 1	2.8v/0.4v	2v/0.7v
L080	O2 Sensor	Bank 2	1.9v/0.4v	2v/0.6v
L300	RKAT	Bank 1	3.49%	0.35%
L310	RKAT	Bank 2	-0.25%	0.29%
L320	FRAU	Bank 1	2.00%	-3.23%
L330	FRAU	Bank 2	-4.14%	-2.53%
L340	FRAU	Bank 1	0.00%	-0.17%
L350	FRAU	Bank 2	-3.78%	-0.13%
HO10	Intake air		19.3kg/h	14.4kg/h
	Throttle opening degree		3
H040	correction factor		-3.4%~9.2%	9.5%

 

Trouble code reset: after changing O2 Sensor Bank 1 Sensor 1, the trouble code is reset