P0204 - OBD Trouble Code

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Usually with this kind of problem, the direct impact can be seen on the engine performance. Affected fuel consumption, engine stalling and non-responsive during acceleration are the first signs along with Malfunction Indicator Light illumination. OBD Code P0204 directly points out to the problem with the fuel injection system and thus needs immediate treatment.

Cylinder 4 Injector Circuit Malfunction means that the ECM (Engine Control Module) has detected a problem with the injector wiring or the circuit. This may be due to the voltage or resistance going up and down from the set acceptable range. This offsets the ECM to make the engine go into fail safe mode to prevent any more damage and stores OBD code P0204 error, illuminating Malfunction Indicator Light (MIL) on the dashboard.

What causes the problem of Cylinder 4 Injector Circuit Malfunction?

• Defective Fuel Injector Cylinder 4
• Clogged or Leaky Fuel Injector Cylinder 4
• Harness for fuel injector is open or shorted
• Poor electrical connection to injector circuit
• Damaged fuel lines and pump
• Faulty fuel pressure sensor
• Clogged or damaged fuel filters

1. Powertrain Control Module - Replace faulty PCM components and reprograms the PCM as it can also be the reason for storing the OBD code wrongly due to system problems. Buy quality parts from us.
2. Fuel Pressure Sensor - Check for faulty pressure sensor as it will affect the fuel delivery and the air intake system, hampering the engine’s performance.
3. Fuel Injection - Damaged, corroded, leaky or clogged fuel injector will restrict fuel entry into the chamber and thus cause lean condition, hampering the overall performance. Replace it now!
4. Diagnostic Tool - Use factory grade diagnostic tools to detect and diagnose the problem properly. Explore from wide variety of tools and equipment form us. Buy today!
5. Engine Control Module - Faulty ECM may flash and store wrong OBD error and cause engine stalling and hard idles. Thus, replace faulty ECM immediately.
6. Engine Wiring Harness - This code can also be set because of damaged or broken wiring harness. Replace them with us now!
7. Carburetor Kits - If there is a problem with the carburetor and the components, it’s better to replace it right away. Buy from us now!

Following are the symptoms that can be an indicative of OBD code P0204 error.

Common Symptoms

• Engine hard starting and stalling
• Engine running rough and poor acceleration
• Failure in shifting and poor throttle response
• Affected fuel efficiency
• Rough Transmission

Take guidance from a qualified mechanic to correct the OBD code P0204 error. Repair or replace the following components to correct the problem.

• Fuel Pressure Sensor Replacement
• Fuel Filter Replacement
• Cylinder 4 Fuel Injector Replacement
• Spark Plugs Replacement
• ECM/PCM Replacement
• Fixing Poor Wiring Connection

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Always take professional help to solve the OBD code P0204 error. An experienced mechanic will make us of quality diagnostic tools to solve the problem efficiently and effectively.

• Inspect and resolve MAP and MAF related code error that might also get stored in the PCM along with this code, which can solve the problem easily.
• Check the fuel injection area for any corrosion or leakages on the exterior and if found, suspect it to be failed.
• Make use of tools like a diagnostic scanner, digital volt/ohm meter, and automotive stethoscope.
• Connect the OBD scanner to retrieve all the error code and freeze frame the data. Then, test run the vehicle again under same circumstances to see if the code returns to make sure which codes are persistent (in case of more than one code).
• Do a sound test to hear if the fuel injector working and if there is no continuous clicking sound, suspect for failed of clogged fuel injector.
• Use the DVOM to test for voltage and a ground pulse, when the engine is running. If no voltage is discovered at the connector of the fuel injector in question, use the DVOM to test system fuses and relays. Replace fuses and/or relays as needed.
• If everything seems to work fine, then check for faulty PCM and replace or reprogram as required.

Common Mistakes When Diagnosing The P0204 Code

• Take help of professional mechanic to solve OBD code problem as this will ensure avoidance of misdiagnosis and can also help to reduce the costs associated with the repairs.
• Fuel injector failure
• Powertrain Control Module (PCM) failure
• Wiring and connector issues in relation to the sensor and circuits
• Damaged or clogged fuel filter