What does it mean?
This diagnostic trouble code (DTC) is a generic powertrain code, meaning it applies to vehicles equipped with OBD-II. Although generic, specific repair steps may vary by make/model.
P0207 means the PCM has detected a fault in the injector or injector wiring. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled “low” or near zero.
When the injector is off, the PCM expects to see a voltage near battery voltage or “high.” If it doesn’t see the expected voltage, the PCM will set this code. The PCM also monitors resistance in the circuit. If the resistance is excessively low or high, it will set this code.
Potential Symptoms
Symptoms of this code will likely include misfiring and rough engine running. Poor acceleration. The MIL will also be illuminated.
Causes of a P0207 engine light code may include:
- Faulty injector. This is typically the cause of this code but doesn’t rule out the possibility of one of the other causes
- Open in injector wiring
- Short circuit in injector wiring
- Faulty PCM
Possible Solutions
First, using a DVOM, check the injector resistance. If it doesn’t meet specifications, replace the injector.
Check voltage at the fuel injector connector. It should have 10 volts or more.
Visually inspect the connector for damage or broken wires.
Visually inspect that the injector isn’t damaged.
If you have access to an injector tester, activate the injector and see if it operates. If the injector operates, you likely have either an open in the wiring or a stuck injector. If you don’t have access to a tester, replace the injector with another one and see if the code changes. If the code changes, change the injector.
At the PCM, remove the conductor wire from the PCM connector and ground the wire. (Make sure you have the correct wire. If you’re not sure, don’t attempt) The injector should activate
Replace the injector