PPE Header , CEL and VSC - 2007 IS 350
11-29-10, 08:10 AM
#32
Lexus Test Driver
Went to Muffler shop.. had them check for leaks.. there was none.
I am ordering O2 simulator off ebay to try fix this. With the new NGK O2 sensor.. the CEL does goes OFF sometimes (I believe it goes off if it passes 2 times in a row) but then it's back on.
Below is complete freeze frame reading when I get CEL
Parameter Description Value
DTC for which Freeze Frame was Stored P0606
Fuel System 1 Status Closed Loop
Fuel System 2 Status Closed Loop
Calculated LOAD Value 44.71 %
Engine Coolant Temp 185.00 °F
Short Term Fuel Trim - Bank 1 -3.13 %
Long Term Fuel Trim - Bank 1 -0.78 %
Short Term Fuel Trim - Bank 2 -1.56 %
Long Term Fuel Trim - Bank 2 -0.78 %
Engine RPM 1,224.00 rpm
Vehicle Speed Sensor 18.02 mph
Ignition Timing Advance #1 Cylinder 26.00 °
Intake Air Temperature 21.20 °F
Air Flow Rate Mass Air Flow Sensor 1.88 lb/min
Absolute Throttle Position 20.00 %
Oxygen Sensor Output Voltage (B1-S2) 1.28 V
Short Term Fuel Trim (B1-S2) 99.22 %
Oxygen Sensor Output Voltage (B2-S2) 0.02 V
Short Term Fuel Trim (B2-S2) 99.22 %
Time Since Engine Start 2530 sec
Fuel Rail Pressure 1,150.15 psi
Bank 1 - Sensor 1 Equivalence Ratio 0.95
Bank 1 - Sensor 1 O2S Voltage 3.00 V
Bank 2 - Sensor 1 Equivalence Ratio 0.97
Bank 2 - Sensor 1 O2S Voltage 3.14 V
Commanded Evaporative Purge 76.47 %
# Warm-ups since DTC Cleared 1
Distance since DTC Cleared 11.18 mi
Barometric Pressure 26.06 inHg
Bank 1 - Sensor 1 Equivalence Ratio 0.95
Bank 1 - Sensor 1 O2S Current -0.1835938 mA
Bank 2 - Sensor 1 Equivalence Ratio 0.97
Bank 2 - Sensor 1 O2S Current -0.09375 mA
Catalyst Temperature Bank 1 - Sensor 1 1,121.18 °F
Catalyst Temperature Bank 2 - Sensor 1 1,121.18 °F
Catalyst Temperature Bank 1 - Sensor 2 1,121.18 °F
Catalyst Temperature Bank 2 - Sensor 2 1,121.18 °F
Control Module Voltage 13.75 V
Absolute Load Value 33.33 %
Commanded Equivalence Ratio 0.99
Relative Throttle Position 3.92 %
Ambient Air Temperature 12.20 °F
Absolute Throttle Position B 52.94 %
Accelerator Pedal Position D 24.31 %
Accelerator Pedal Position E 40.78 %
Commanded Throttle Actuator 20.00 %
Time since DTC Cleared 0 hr42sec
I am ordering O2 simulator off ebay to try fix this. With the new NGK O2 sensor.. the CEL does goes OFF sometimes (I believe it goes off if it passes 2 times in a row) but then it's back on.
Below is complete freeze frame reading when I get CEL
Parameter Description Value
DTC for which Freeze Frame was Stored P0606
Fuel System 1 Status Closed Loop
Fuel System 2 Status Closed Loop
Calculated LOAD Value 44.71 %
Engine Coolant Temp 185.00 °F
Short Term Fuel Trim - Bank 1 -3.13 %
Long Term Fuel Trim - Bank 1 -0.78 %
Short Term Fuel Trim - Bank 2 -1.56 %
Long Term Fuel Trim - Bank 2 -0.78 %
Engine RPM 1,224.00 rpm
Vehicle Speed Sensor 18.02 mph
Ignition Timing Advance #1 Cylinder 26.00 °
Intake Air Temperature 21.20 °F
Air Flow Rate Mass Air Flow Sensor 1.88 lb/min
Absolute Throttle Position 20.00 %
Oxygen Sensor Output Voltage (B1-S2) 1.28 V
Short Term Fuel Trim (B1-S2) 99.22 %
Oxygen Sensor Output Voltage (B2-S2) 0.02 V
Short Term Fuel Trim (B2-S2) 99.22 %
Time Since Engine Start 2530 sec
Fuel Rail Pressure 1,150.15 psi
Bank 1 - Sensor 1 Equivalence Ratio 0.95
Bank 1 - Sensor 1 O2S Voltage 3.00 V
Bank 2 - Sensor 1 Equivalence Ratio 0.97
Bank 2 - Sensor 1 O2S Voltage 3.14 V
Commanded Evaporative Purge 76.47 %
# Warm-ups since DTC Cleared 1
Distance since DTC Cleared 11.18 mi
Barometric Pressure 26.06 inHg
Bank 1 - Sensor 1 Equivalence Ratio 0.95
Bank 1 - Sensor 1 O2S Current -0.1835938 mA
Bank 2 - Sensor 1 Equivalence Ratio 0.97
Bank 2 - Sensor 1 O2S Current -0.09375 mA
Catalyst Temperature Bank 1 - Sensor 1 1,121.18 °F
Catalyst Temperature Bank 2 - Sensor 1 1,121.18 °F
Catalyst Temperature Bank 1 - Sensor 2 1,121.18 °F
Catalyst Temperature Bank 2 - Sensor 2 1,121.18 °F
Control Module Voltage 13.75 V
Absolute Load Value 33.33 %
Commanded Equivalence Ratio 0.99
Relative Throttle Position 3.92 %
Ambient Air Temperature 12.20 °F
Absolute Throttle Position B 52.94 %
Accelerator Pedal Position D 24.31 %
Accelerator Pedal Position E 40.78 %
Commanded Throttle Actuator 20.00 %
Time since DTC Cleared 0 hr42sec
All three items in bold look suspect. How could you have 1100 psi of fuel pressure?? That seems to be an INSANE amount of fuel for barely a blip on the throttle.
.02 volts on the other o2 sensor is WAYYY to lean as well. Maybe you do have a bad pcm.....
11-29-10, 09:22 AM
#33
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I think the fuel pressure looks fine. The ISx50's have two fuel pumps.
The electric pump from the fuel tank should output 28 - 85psi with the ignition on but engine not running.
The second fuel pump is mechnical and will boost the pressure for the direct injectors. Specs are 508 - 653 psi with the engine at idle. Seeing pressure approaching 2000psi is the norm as it will increase with engine RPM. It's even higher for diesel.
Last edited by Gaugster; 11-29-10 at 09:41 AM.
12-10-10, 03:47 PM
#35
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Jadeboy - The guys at RCTS tried telling me if i got headers that it would throw up my check engine light and put my car into limp mode..has this happened to you? or anyone with ppe headers? Its probably just RCTS blowing smoke outta there *** because they dont sell the product.
12-10-10, 03:49 PM
#36
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12-10-10, 04:03 PM
#37
Jadeboy - The guys at RCTS tried telling me if i got headers that it would throw up my check engine light and put my car into limp mode..has this happened to you? or anyone with ppe headers? Its probably just RCTS blowing smoke outta there *** because they dont sell the product.
12-10-10, 04:12 PM
#38
The diagram you sent me seems a little complicated.. but I will look at it..
I got an email from the O2 simulator guy.. He suggested I should use either radio, cruise, or fuel pumps (usually red wire).. I was thinking using the Illuminated Door Sill (but I think it's not ignition wire and will go on when you open the door) on the passenger for power... as long as it's a 12v source it should work... anyone got a suggestion and diagram?
12-14-10, 09:56 PM
#39
The Saga continues…
I continue to drive my Car… but now I am getting
P0158 - O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) the other sensor on the driver side after the CAT.
And I finally got some REALTIME software to analysis my problem.. The realtime results shows that
P0158 (Bank 2 Sensor 2) always returns a CONSTANT 1.275 V (above the threshold of 1.20) and it does NOT fluctuate… and it’s immediate.. right after I turn on my car even with the car battery unplugged just recently. What would cause a constant value ?
P0138 (Bank 1 Sensor 2) starts fine… at a lower voltage that is valid and is fluctuating but eventually it reaches the 1.20 threshold to throw P0138.
As I stated earlier.. I have brought an O2 simulator.. I may now need another one.
I continue to drive my Car… but now I am getting
P0158 - O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) the other sensor on the driver side after the CAT.
And I finally got some REALTIME software to analysis my problem.. The realtime results shows that
P0158 (Bank 2 Sensor 2) always returns a CONSTANT 1.275 V (above the threshold of 1.20) and it does NOT fluctuate… and it’s immediate.. right after I turn on my car even with the car battery unplugged just recently. What would cause a constant value ?
P0138 (Bank 1 Sensor 2) starts fine… at a lower voltage that is valid and is fluctuating but eventually it reaches the 1.20 threshold to throw P0138.
As I stated earlier.. I have brought an O2 simulator.. I may now need another one.
12-15-10, 04:09 AM
#40
Jadeboy - The guys at RCTS tried telling me if i got headers that it would throw up my check engine light and put my car into limp mode..has this happened to you? or anyone with ppe headers? Its probably just RCTS blowing smoke outta there *** because they dont sell the product.
12-18-10, 09:29 AM
#41
With all the problems I am having.. I am considering ordering and placing PPE CAT for the header.. Anyone know what the differences in Power, Torque, Sound, etc?
Additionally,
My O2 simulator that I have is cycling between 0.0V/0.7V every 3 sec.. should this be the approximate number or should it be more of 0.45V and less cycling... this is after the CAT.
Additionally,
My O2 simulator that I have is cycling between 0.0V/0.7V every 3 sec.. should this be the approximate number or should it be more of 0.45V and less cycling... this is after the CAT.
Last edited by jadeboy; 12-18-10 at 09:51 AM.
01-11-11, 09:15 PM
#42
Fixed - Maybe
After driving around for 35 minutes with -2F (-18 C) winter temperature.. NO CEL light!!
It took 2 O2 simulators and 1 new O2 sensor..
The O2 simulators came with heater wires but I decided to use the O2 sensors heater wiring (one O2 sensor heater was broken.. so the sensor was replaced)
I tapped into the ignition power source using the cigarette lighter (for powering the 2 O2 simulators) using Posi-Tab/Posi-Lock http://www.posi-lock.com/posiplug.html this made my wiring super simple, highly recommended...
It took 2 O2 simulators and 1 new O2 sensor..
The O2 simulators came with heater wires but I decided to use the O2 sensors heater wiring (one O2 sensor heater was broken.. so the sensor was replaced)
I tapped into the ignition power source using the cigarette lighter (for powering the 2 O2 simulators) using Posi-Tab/Posi-Lock http://www.posi-lock.com/posiplug.html this made my wiring super simple, highly recommended...
Last edited by jadeboy; 01-11-11 at 09:20 PM.
01-11-11, 10:36 PM
#43
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I seem to be having the same issue.. after resetting mine takes about 24 hours to light up.. what exactly did you do to resolve the issue.. where did u get the simulators from? and where exactly did u tap the wires... DIY maybe?
