Urgent Help needed regarding Ninja300 2022 model o2 sensor fault(Error 33)

408 Views 5 Replies 3 Participants Last post by Topaz, 30 d ago

Sharanya

Discussion Starter · 1 mo ago

Hi everyone
I have a 2022 model Ninja300 BS6(Indian emission norm) model with original Akrapovic slip-on & k&n air filter installed.The bike was running fine.But during my 12k service at service station,the o2 sensor got faulty & check engine light came on.The error code was 33.The service guys told me that the sensor was faulty by water ingress by them.As it is under warranty,they will replace it within next 20-30 days.
So,till the sensor arrives,Is it ok to drive it without the sensor? What is the possible outcome(If any) ?
Also,i want get rid of the annoying check engine light till the sensor arrives! So,I made some detailed study & i came to know that this is a narrowband o2 sensor with 4 wires & the main function of the sensor is to maintain a air fuel ratio of 14.7:1. Some guys bypassed it by using two resistors.According to this post,he is using 2 resistors to fooling the ecu.330 ohms resistor is soldered between the heater wires & 47K ohms between the signal lines.So,is the resistor values correct?
Also,what is the 4 pin connector(White male/felame connectors) name for the sensors? Rather that soldering resistors directly to the wires,I will crimp 4 wires using a new connector.I will place orders for the connector so i need to know the connector name.
Any kind of help is much appreciated.......

Save

1 - 6 of 6 Posts

Topaz

· #2 · 30 d ago

Hi Sharanya. Is the engine check light orange or red? Orange relates to fuel system while red relates to engine problems, usually more serious.

If the engine check light is orange, I'd say is safe to ride the bike as long as it rides smooth. As you said, the O2 sensor is used by the ECU to determine the air fuel ratio and decides how much fuel to inject.
If the ECU pours way too much or too little fuel in the mix, the bike won't run well. If you consistently ride the bike too lean or too rich, that may lead to problems in the long run, but won't do damage in the short term.
Very probably, the ECU will make sure that the AFR won't go into values that may make the bike run too lean or too rich.
When I got my bike (2013 used), it already had a Yoshi pipe and no O2 and I never got the light or the 33 code.

It looks like the connector comes with the sensor. Check part# 21176E - Oxigen Sensor in this diagram:
2017 Kawasaki NINJA 300 (EX300AHF) Fuel Injection | Babbitts Kawasaki Parts House

See less See more

Save

Sharanya

Discussion Starter · #3 · 30 d ago

Topaz said:
Hi Sharanya. Is the engine check light orange or red? Orange relates to fuel system while red relates to engine problems, usually more serious.

If the engine check light is orange, I'd say is safe to ride the bike as long as it rides smooth. As you said, the O2 sensor is used by the ECU to determine the air fuel ratio and decides how much fuel to inject.
If the ECU pours way too much or too little fuel in the mix, the bike won't run well. If you consistently ride the bike too lean or too rich, that may lead to problems in the long run, but won't do damage in the short term.
Very probably, the ECU will make sure that the AFR won't go into values that may make the bike run too lean or too rich.
When I got my bike (2013 used), it already had a Yoshi pipe and no O2 and I never got the light or the 33 code.

It looks like the connector comes with the sensor. Check part# 21176E - Oxigen Sensor in this diagram:
2017 Kawasaki NINJA 300 (EX300AHF) Fuel Injection | Babbitts Kawasaki Parts House

thanks for the reply. The engine check is in orange colour.
For your case,i think,there is o2 elimintor installed(as i posted the link above).That’s why you are getting no errors!
I think the riding experience is smooth .Also,i am getting sufficient speed.Today i tested 165 on 5th gear on 12000 rpm).But there is engine pops during clutch/deacceleration.
Actually,i am also not very sure if the bike is running lean/rich thats why i asked to use diy o2 eliminator.
I gone through your link & there is no connector name mentioned as you said earlier.

Save

jjmaine

· #4 · 30 d ago

I'm guessing Topaz's bike had the ecu flashed with the full exhaust and they can disable the O2 sensor so it doesn't get a check engine light when you remove it. I have no CEL and removed my O2 sensor. I even bought an O2 eliminator to plug in but didn't even need it as it had been disabled in my ecu already...

Save

Sharanya

Discussion Starter · #5 · 30 d ago (Edited)

jjmaine said:
I'm guessing Topaz's bike had the ecu flashed with the full exhaust and they can disable the O2 sensor so it doesn't get a check engine light when you remove it. I have no CEL and removed my O2 sensor. I even bought an O2 eliminator to plug in but didn't even need it as it had been disabled in my ecu already...

Can you please measure the resistor values in the o2 eliminator?? The simple thing you can do is to get a multimeter & measure between the heater pins & between the signal pins of the o2 eliminator.
I can’t reflash the ecu as the bike is still in warranty!
The only thing i can do is to make a diy o2 eliminator using two resistors to get rid off the annoying engine check light !The reason behind prefering a diy o2 eliminator is because ordering one would take approx the same time as the o2 sensor arrival in my place! Also, i am not sure if it can be delivered in my place as i live in a remote village in India…..

Save

Topaz

· #6 · 30 d ago

jjmaine said:
I'm guessing Topaz's bike had the ecu flashed with the full exhaust and they can disable the O2 sensor so it doesn't get a check engine light when you remove it. I have no CEL and removed my O2 sensor. I even bought an O2 eliminator to plug in but didn't even need it as it had been disabled in my ecu already...

I got the bike with 2000 miles. Previous owner told me he installed the full yoshi system at the dealer and they didn't flash it. Later, I installed myself a power commander. However, at the dealer they could have plugged the CEL eliminator resistance to the main harness. I'll check the next time I pull the fairings.

Save

1 - 6 of 6 Posts

Top Contributors this Month