i am geting a code P0200 anyone know this code or knows were i can look it up?

 

I have a diagnostic computer and that code says "injector circuit open", but I have an OZ rally, so the codes may be different, but if not, hope it helps.

 

thanks

 

I swap most the parts onto my buddys evo and I can't find the problem. Is there anyway I can test the ecu? Everything is pointing to the ecu, I don't want to buy one and it's not the problem? I am thinking of getting the aem if my ecu is shot.

 

i got the car checked today with a scan yool and it comes up powertain injector circuit malfunction. How can i fix this and what is the cause of this, where is it located?

 

so is your car stock? now.?

 

pretty much i only have the exhaust and intake

 

Why would you buy a computer? The car is under warranty.

Regardless, 99% it is either a bad injector or you have a poor connection, bad wire (pinched, chafed) somewhere.
ECUs do not crap out that often and many are replaced because of poor diagnosis.

 

First thing is there is not code p0200 for the Evo, there is a code p0201 which is for the injectors as well as p0202, p0203, p0204 depending on which injector fails. Anyway here is what the service manual says.

CIRCUIT OPERATION
• The power for the injector is supplied by the No. 4 terminal of the MFI relay via an injector resistor.
• The ECM controls the injector by turning the power transistor in the ECM "ON" and "OFF".
TECHNICAL DESCRIPTION
• The amount of fuel injected by the injector is controlled by the amount of continuity time the coil is grounded by the ECM.
• A surge voltage is generated when the injectors are driven and the current flowing to the injector coil is shut off.
• The ECM checks this surge voltage.
DTC SET CONDITIONS

Check Conditions
Engine speed is lower than 1,000 r/min.
Throttle position sensor output voltage is lower than 1.16 volts.

Judgement Criteria
• Injector coil surge voltage (battery positive voltage +2 volts) has not been detected for two seconds.
TROUBLESHOOTING HINTS (The most likely causes for this code to be set are: )
• Injector failed.
• Injector resistor failed.
• Open or shorted injector circuit, harness damage, or loose connector.
• ECM failed.

Hope this helps

 

Sorry to sound silly but were is the ecm, injector resistor, relay located?


Thanks for the info
This site is helpful sometime's

 

anyone

 

The ECU is behind the glove box towards the center of the car.
The injector resistor is on the firewall behind the intake near the ABS. Look for the white ceramic and heatsink.
The MFI relay is in the underhood junction box.

 

so where is the ecm?

 

ECU = ECM

As timzcat said, it's behind the glovebox.