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Old 06-12-2018, 04:24 PM   #776
CazTypeS
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Someone please help me, specifically someone who knows a lot about KTUNER..
So heres my situation, i have a 2003 Acura RSX Type-S with ktuner installed
To my knowledge, which is limited because im still learnig how to tune/use ktuner, my 2003 Type-S has a 05/06 ECU
My check engine light is on for “Error Code P0135” which stands for Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1). This indicates the PCM has detected a problem with the bank 1 oxygen sensor.
What I believe is the issue is that my O2 sensor is for the 03 Type-S, but since I have an 05/06 ECU, it is not matching up and is basically non-functional ((my therory, please correct me if I am wrong))
So I am looking to replace the O2 sensor with a wide and sensor that I can use with KTUNER platform to adjust my AFR (air fuel ratio) because as it stands my car is running VERY rich
I found a wideband Sensor online http://www.karcepts.com/shop/product.php?id_product=79
So I need to know if this sensor will work with my 2003 Type S with the 05/06 KTUNER ECU, and if not which O2 sensor WILL work for me to...
A) Get rid of P0135 error code
B) Function as the O2 sensor should
C) Be able to adjust AFR, which is a wideband senor I THINK

SOMEONE PLEASE HELP ME, I feel like I’ve described in the most detailed fashion I can, but if there’s any questions about my car you have please ask them, I’ll clarify anything I can

Some mods if it’s helpful/required
RDX fuel injectors
DC Headers
Greddy full Exhaust
Stock Intake manifold
Cold air intake
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Old 06-12-2018, 04:55 PM   #777
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Originally Posted by CazTypeS View Post
Someone please help me, specifically someone who knows a lot about KTUNER..
So heres my situation, i have a 2003 Acura RSX Type-S with ktuner installed
To my knowledge, which is limited because im still learnig how to tune/use ktuner, my 2003 Type-S has a 05/06 ECU
My check engine light is on for “Error Code P0135” which stands for Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1). This indicates the PCM has detected a problem with the bank 1 oxygen sensor.
What I believe is the issue is that my O2 sensor is for the 03 Type-S, but since I have an 05/06 ECU, it is not matching up and is basically non-functional ((my therory, please correct me if I am wrong))
So I am looking to replace the O2 sensor with a wide and sensor that I can use with KTUNER platform to adjust my AFR (air fuel ratio) because as it stands my car is running VERY rich
I found a wideband Sensor online http://www.karcepts.com/shop/product.php?id_product=79
So I need to know if this sensor will work with my 2003 Type S with the 05/06 KTUNER ECU, and if not which O2 sensor WILL work for me to...
A) Get rid of P0135 error code
B) Function as the O2 sensor should
C) Be able to adjust AFR, which is a wideband senor I THINK

SOMEONE PLEASE HELP ME, I feel like I’ve described in the most detailed fashion I can, but if there’s any questions about my car you have please ask them, I’ll clarify anything I can

Some mods if it’s helpful/required
RDX fuel injectors
DC Headers
Greddy full Exhaust
Stock Intake manifold
Cold air intake
On the website for Ktuner, it states that a second gen RSX O2 is needed. I think that right there is your problem.
http://ktuner.com/rsx/

https://www.kseriesparts.com/DEN-234-9064.html

Last edited by mfarmakas17; 06-12-2018 at 04:57 PM.. Reason: included link
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Old 06-13-2018, 02:00 PM   #778
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basically what he said. The 05-06 O2 sensor is a completely different kind of [wideband] sensor, so much so that people tend to refer to it as a narrowband. The 02-04 is a good ol' wideband, but doesn't work with Ktuner, because it doesn't work with the 05-06 ECU
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Old 06-13-2018, 02:02 PM   #779
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So if I wanted to run a Wideband O2 sensor I’d have to find an 05/06 one? Do those AEM gauge/Sensor kits work? If I put a wideband in do I also need to replace my OEM O2 sensor or is it just an upgraded replacement?
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Old 06-13-2018, 02:12 PM   #780
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Originally Posted by CazTypeS View Post
So if I wanted to run a Wideband O2 sensor Id have to find an 05/06 one? Do those AEM gauge/Sensor kits work? If I put a wideband in do I also need to replace my OEM O2 sensor or is it just an upgraded replacement?
Not sure on the AEM sensor, but I believe you would have to manually wire into your ecu (based on previous threads I read in regards to it).

However, I am sure that just buying an 05-06 sensor will be your easiest fix
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Old 06-14-2018, 01:28 PM   #781
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I think if you want an AFR gauge, your easiest route is to just get the oem 05-06 O2 sensor and get Bluetooth on your Ktuner and run the TunerView app on Android phone
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Old 06-25-2018, 05:46 AM   #782
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Hi everyone! I'm fresh in the group but need your help. I recently bought a second hand ktuner enduser ecu. How do I tell whether it is an enduser and not just a reflash? Any help is appreciated.
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Old 06-25-2018, 10:13 AM   #783
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Hi everyone! I'm fresh in the group but need your help. I recently bought a second hand ktuner enduser ecu. How do I tell whether it is an enduser and not just a reflash? Any help is appreciated.
There will be a daughterboard with a Mini USB port plugged into the motherboard of the ECU. You can see it by removing the lid from the ECU. Should look like the pic below, maybe with a different color daughterboard.
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Old 06-25-2018, 06:20 PM   #784
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Thank you so much for your help. I did some research and found that I had most probably got the pre revision board judging by the colour. I can't wait to get stuck into tuning.
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