ECU-MAN
07-07-2007, 11:40 PM
Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!
No part of this DIY is to be reproduced with out acknowledgment of the site and author it came from, ie me and ozhonda.com. Do not rip parts off and claim them as your own.
FSS ( Fuel Supply System ). The Fuel Supply System consists of the fuel pump, fuel pump strainer, fuel lines and rails, Fuel Filter Fuel Pressure regulator, Injectors and return line. However the oxygen sensors play a big role in diagnosing this code.
Aim:
Diagnose code 43.
http://ecu-man.com/diy/pgmfi/mil/pgmfi-code-43.gif
Symptoms
Engine light comes on and code 43 registered in ECU memory. Car will still drive as normal. Common causes for code 43 are a faulty oxygen sensor. However its been known for a blocked fuel filter or failing fuel pump to trigger this code. The ECU will adjust the pulse width ( duty ) of the injectors to achieve a target fuel mixture and expect to see a change in the fuel mixture by monitoring the Oxygen sensor. If it does not see the change it know's it has made it will trigger code 43.
This code can be difficult to diagnose. So reset the ECU and see if it comes back. If it does then read bellow.
Items to inspect are
- quality of your fuel used
- Oxygen Sensor (http://www.ozhonda.com/forum/showthread.php?t=69868)(s)
- fuel filter (http://www.ozhonda.com/forum/showthread.php?t=40747)
- Injectors (http://www.ozhonda.com/forum/showthread.php?t=68110)
- fuel pump
- main PGMFI relay (http://www.ozhonda.com/forum/showthread.php?t=31796)
- fuel pressure regulator. ( ensure the vacuum line is connected )
- fuel return line. ( ensure its not clamped off. Its been known to have left a clamp on the return line after a fuel injector flush ).
as mentioned above, you could have this code and have nothing wrong with your car, so reset the ECU and see how it goes.
* Notes
KOEO = Key On Engine Off
KOER = Key On Engine Running
Back probe the sensor, use a paperclip and push it into the connector then touch/clip your multi meter lead to the paper clip
Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!
No part of this DIY is to be reproduced with out acknowledgment of the site and author it came from, ie me and ozhonda.com. Do not rip parts off and claim them as your own.
FSS ( Fuel Supply System ). The Fuel Supply System consists of the fuel pump, fuel pump strainer, fuel lines and rails, Fuel Filter Fuel Pressure regulator, Injectors and return line. However the oxygen sensors play a big role in diagnosing this code.
Aim:
Diagnose code 43.
http://ecu-man.com/diy/pgmfi/mil/pgmfi-code-43.gif
Symptoms
Engine light comes on and code 43 registered in ECU memory. Car will still drive as normal. Common causes for code 43 are a faulty oxygen sensor. However its been known for a blocked fuel filter or failing fuel pump to trigger this code. The ECU will adjust the pulse width ( duty ) of the injectors to achieve a target fuel mixture and expect to see a change in the fuel mixture by monitoring the Oxygen sensor. If it does not see the change it know's it has made it will trigger code 43.
This code can be difficult to diagnose. So reset the ECU and see if it comes back. If it does then read bellow.
Items to inspect are
- quality of your fuel used
- Oxygen Sensor (http://www.ozhonda.com/forum/showthread.php?t=69868)(s)
- fuel filter (http://www.ozhonda.com/forum/showthread.php?t=40747)
- Injectors (http://www.ozhonda.com/forum/showthread.php?t=68110)
- fuel pump
- main PGMFI relay (http://www.ozhonda.com/forum/showthread.php?t=31796)
- fuel pressure regulator. ( ensure the vacuum line is connected )
- fuel return line. ( ensure its not clamped off. Its been known to have left a clamp on the return line after a fuel injector flush ).
as mentioned above, you could have this code and have nothing wrong with your car, so reset the ECU and see how it goes.
* Notes
KOEO = Key On Engine Off
KOER = Key On Engine Running
Back probe the sensor, use a paperclip and push it into the connector then touch/clip your multi meter lead to the paper clip
Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!