LS2 DCTs

[Gummisko]

EDIT:
New DCT codes at the bottom

hi!
first som info on my car.
i have a Nissan Silvia s14 with a LS2 and T56, with an home made harness.
engine mods:
comp xfi xer 281 cam
comp rods, comp dual spring, comp trunnion upgrade, comp high energy lifters, arp rodbolt
+ mildly ported heads, intake and TB
hooker headers 1 7/8"
true dual exhaust - 3" > X-pipe > 2.5" Flowtech Raptor

VATS, rear O2s and some emission have been removed from ecm

car starts and runs good
but i get som DCT + oxygen readieness error:

[] P0030 - HO2S Heater Control Circuit Bank 1 Sensor 1 (SES) (Old) (History) (Current) (Immature)
[] P0050 - HO2S Heater Circuit Bank 2 Sensor 1 (SES) (Old) (History) (Current) (Immature)
[] P0053 - HO2S Heater Resistance Bank 1 Sensor 1 (Old) (Current) (Immature)
[] P0059 - HO2S Heater Resistance Bank 2 Sensor 1 (Old) (Current) (Immature)
[] P0102 - Mass Air Flow (MAF) Sensor Circuit Low Frequency (SES) (Old) (History) (Current) (Immature)
[] P0801 - Reverse Inhibit Control Circuit Malfunction (Old) (History) (Current) (Immature)
[] P0030 - HO2S Heater Control Circuit Bank 1 Sensor 1
[] P0050 - HO2S Heater Circuit Bank 2 Sensor 1
[] P0102 - Mass Air Flow (MAF) Sensor Circuit Low Frequency


Continuous Tests
Misfire: Complete
Fuel System: Complete
Comprehensive Component: Complete


Once Per Trip Tests
Catalyst: Complete
Heated Catalyst: n/a
Evaporative System: Complete
Secondary Air System: n/a
A/C System Refrigerant: n/a
Oxygen Sensor: Incomplete
Oxygen Sensor Heater: Incomplete
EGR System: n/a


and i have som strange behaviour on my Wide band O2s (2xAEM UEGO) both sides exactly the same problem.
in closed loop the jump inbetween 14-16 afr while coasting and in idle its strart at 13 an slowly goes to 18 to almoast stall the engine and then goes back to 13 and over again..?

in open loop its stable around 13 at idle and while coasting

i want to have these things sorted before i go to my tuner for a proper tune...

i can post a scan too if needed

///Janne - Sweden

[Gummisko]

a short log, standing on my driveway on idle + some revving.

Maf showing nothing

[Gummisko]

sorry for an unnessesary thread, my maf + o2s did not have power......=(

but now i got new DCTs:
[] P0106 - Manifold Absolute Pressure (MAP) System Performance (Pending) (Current) (Immature)
[] P0300 - Engine Misfire Detected (Pending) (Old) (Current) (Immature)


Continuous Tests
Misfire: Complete
Fuel System: Complete
Comprehensive Component: Complete


Once Per Trip Tests
Catalyst: Complete
Heated Catalyst: n/a
Evaporative System: Complete
Secondary Air System: n/a
A/C System Refrigerant: n/a
Oxygen Sensor: Incomplete
Oxygen Sensor Heater: Incomplete
EGR System: n/a

[Gummisko]

new log with power..=)
o2 + maf is now working

[Gummisko]

took a little trip and logged..

and here are my new DCTs

[] P0106 - Manifold Absolute Pressure (MAP) System Performance (SES) (Pending) (History) (Current) (Immature)
[] P0801 - Reverse Inhibit Control Circuit Malfunction (Pending) (Old) (History) (Current) (Immature)
[] P0106 - Manifold Absolute Pressure (MAP) System Performance


Continuous Tests
Misfire: Complete
Fuel System: Complete
Comprehensive Component: Complete


Once Per Trip Tests
Catalyst: Complete
Heated Catalyst: n/a
Evaporative System: Complete
Secondary Air System: n/a
A/C System Refrigerant: n/a
Oxygen Sensor: Incomplete
Oxygen Sensor Heater: Complete
EGR System: n/a

[Russ K]

For the P0106, just max out the enable temp in he Engine Diagnostics>General tab. For the P0801, you need to diagnose the reverse inhibit circuit & solenoid.

Russ Kemp

[Gummisko]

thanks Russ K, P0106 is no longer...=)

going to start diagnose the reverse lockout tomorrow
can the lockout solenoid break if i force it in to reverse?

[Gummisko]

every time i fix a DCT a new one appears...
appears almost directly when i start the car

[] P0300 - Engine Misfire Detected (Pending) (Old) (Current) (Immature)




and reverse lockout is now fixed, it wasnt connected to the ecm...

[Gummisko]

i have adjusted knocksensitivity a little at idle, what more do i need to do?


new list of dct...

this time the malfunction lamp came while coasting at 1700rpm on highway, on my second longer trip.
the first long trip (35km) did not illuminate the malfunction lamp
can i disable the p1381 code?


[] P0300 - Engine Misfire Detected (SES) (Old) (History) (Immature)
[] P1381 - Misfire Detected - No Communication with Brake Control Module (Old) (History) (Current) (Immature)
[] P0300 - Engine Misfire Detected


Continuous Tests
Misfire: Complete
Fuel System: Complete
Comprehensive Component: Complete


Once Per Trip Tests
Catalyst: Complete
Heated Catalyst: n/a
Evaporative System: Complete
Secondary Air System: n/a
A/C System Refrigerant: n/a
Oxygen Sensor: Complete
Oxygen Sensor Heater: Complete
EGR System: n/a


i did also have some problems with startup airflow , now adjusted and almost always works perfect
sometimes on middle temp 45-65 Celcius i need to crank 2 times...maybe add more airflow?

[ingsteve]

P0300 can be cured by increasing misfire table...with a cam is normal