CAR OBD CODES
OBD/DTC Search, e.g.P0201
CAR OBD CODES P0201
P0201 OBD Code Definition:
P0201 Fuel Injector, Cylinder 1 Activation
P0201 OBD Code Description:
OBD2 Code P0201 Definition:
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”. 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.
Symptoms
Possible sumptoms of P0201
The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.
Possible Causes
Possible causes of P0201
The causes 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
Possible Solutions
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 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
Note: The information on the P0201 error code is purely informative, if you need more useful information, please consult your technician.
B2477 B2549 B1966 B2744 B1559 B1361 B2417 B294E B12AD B2128 B2613 B2525 B241A B1508 B2ADE OBDII Chassis Codes
C1285 C1018 C003A C0321 C1A64 C1444 C2808 C1439 C1022 C1967 C0081 C1276 C0069 C1517 C1907 OBDII Network Codes
U0121 U1256 U0263 U0474 U1219 U1007 U1019 U0531 U0185 U0259 U1048 U1262 U1154 U041B U1236 OBDII Powertrain Codes
P0A27 P1997 P1014 P2592 P024E P0372 P2104 P0121 P1505 P174B P1393 P0789 P2309 P0B88 P0A24