04 grd.chetrokee spec. edition 4.0L code P0206, open injector circuit.. Do I replace the injector, or is there a fix.. Thanks Ray

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http://repairpal.com/OBD-II-Code-P0172-and-P0175

Fuel pressure regulator , leaking fuel injectors What Can Cause P0172 P0175 Rich DTC Diagnosing to Win with Fuel Trim

I prefer ac delco, ngk or champion. Some vehicles spec iridium tip...just make sure you get oem equivilant. Split fire and e3 can cause issues in so e instances..but if they work for you don't worry about it.

jeep grand cherokee
Champion RC12ECC
Autolite AAP3924
Beru 14FR-8HU
Bosch FR8HC
Ngk FR5-1

the ECM already is working the injector
check injector harness connections and the connections at the
EC M
you can try substituting the ECM with a known good unit as a last resort to prove a point

You have a bad vacuum line to the controller. They usually break near the engine. The only vacuum line the goes into the electrical harness. If it is good from the engine to harness. run a new line.

Hi, these are taken from the data sheets

P1523 - electronic throttle system (ETS) - throttle valve sticking - probable cause = mechanical fault, ECM

P0204 - injector 4 - circuit malfunction - probable cause = wiring, injector, ECM

P0206 - injector 6 - circuit malfunction - probable cause = wiring, injector, ECM

hope that helps

• if u have a circuit open code u have either a bad injector
  an ecm or a wiring problem testing the problem only
• involves the 2 circuit wires to the injector from the ecm

Hi there:
P0206 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0206 engine light code could be any of the following:
- Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
- Open in the wiring to the injector
- Short in the wiring to the injector
- Bad PCM

First, using a DVOM check the resistance of the injector. If it isn't within specs, then replace the injector.

Check for voltage at the fuel injector connector. It should have 10 volts or more.
Visually check the connector for damage or broken wires.
Visually check the injector for damage.

If you have access to an injector tester, activate the injector and see if it operates. If the injector operates, then you likely have either an open in the wiring, or a blocked injector. If you do not have access to a tester, swap the injector with another one and see if the code changes. If the code changes, then change the injector.

At the PCM, remove the driver wire from the PCM connector and Ground the wire. (Make sure you have the correct wire. If you're not sure, do not attempt) The injector should activate
Replace the injector

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Hi there:

P0206 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.




The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.





The causes of a P0206 engine light code could be any of the following:
- Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
- Open in the wiring to the injector
- Short in the wiring to the injector
- Bad PCM




First, using a DVOM check the resistance of the injector. If it isn't within specs, then replace the injector.

Check for voltage at the fuel injector connector. It should have 10 volts or more.
Visually check the connector for damage or broken wires.
Visually check the injector for damage.




If you have access to an injector tester, activate the injector and see if it operates. If the injector operates, then you likely have either an open in the wiring, or a blocked injector. If you do not have access to a tester, swap the injector with another one and see if the code changes. If the code changes, then change the injector.




At the PCM, remove the driver wire from the PCM connector and Ground the wire. (Make sure you have the correct wire. If you're not sure, do not attempt) The injector should activate
Replace the injector




Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.