What is a cylinder 1 injector circuit?
What is a cylinder 1 injector circuit?
The PO262 code stands for “Cylinder 1 Injector Circuit High.” What this means is that the fuel injector that is attached to the number one cylinder is not working right; in this case, there is a higher than average draw from the fuel injector. Definition. Meaning. Causes. Symptoms.
What is the trouble code for Injector 1 circuit malfunction?
P0201 – Injector 1 -circuit malfunction Trouble Code Fault Location Probable Cause P0201 Injector 1 -circuit malfunction Wiring, injector, ECM
How do you check continuity between PCM and injector?
You can check for continuity between the PCM and injector using a digital multimeter set to ohms. Touch one end of the meter to the harness side of the injector connector and the other to the injector driver pin on the PCM. An over limit reading (OL) on your meter, indicates there is an open circuit between the injector and PCM.
When does the p0201 circuit malfunction cylinder 1?
Engine Control Module ( ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The ECM will trigger the P0201 code when the resistance or voltage drop at the injector 1 is out of specifications. Need more information on how to fix the P0201 code? Need more help? What is OBDII? How does the OBDII works?
What kind of driver is needed for injector circuit?
Typically, there is always battery power at one of the two injector terminals. When injection is required, the powertrain control module (PCM) driver grounds the other terminal. This completes the circuit and fuel is sprayed into the cylinder. Two of the most common injector driver designs are the “saturated switch” and the “peak and hold”.
You can check for continuity between the PCM and injector using a digital multimeter set to ohms. Touch one end of the meter to the harness side of the injector connector and the other to the injector driver pin on the PCM. An over limit reading (OL) on your meter, indicates there is an open circuit between the injector and PCM.
What to do if OBD-II cylinder 1 injector does not work?
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.
What does p0201 mean on a PCM?
P0201 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”.
