The OBD code P0303 for Chrysler indicates a misfire in cylinder 3. This affects the engine’s performance, causing symptoms like engine light on, lack of power, hard starting, and engine hesitation.
Common causes include a faulty spark plug, clogged fuel injector, or ignition coil issues.
While not an immediate danger, it can lead to further engine damage if left unresolved.
To fix it, inspect and potentially replace the spark plug, fuel injector, or ignition coil in cylinder 3, and check related wiring for any faults.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Chrysler p0303 OBD Code
The engine runs rough and there is a noticeable lack of power.
- With Chrysler OBD code P0303, the Engine Light will be ON.
- Lack/loss of power may be experienced.
- Hard start can occur.
- Engine hesitation might be noticeable.
Causes of the Chrysler p0303 OBD Code
Possible reasons for Chrysler fault code P0303 include ignition system issues and fuel injector problems.
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- P0303 can be caused by Faulty Spark Plug #3.
- Clogged or faulty Fuel Injector #3.
- Faulty Ignition Coil #3.
- Fuel Injector #3 harness is open or shorted.
- Fuel Injector #3 circuit poor electrical connection.
- Ignition Coil #3 harness is open or shorted.
- Ignition Coil #3 circuit poor electrical connection.
- Insufficient cylinder 3 compression.
- Incorrect fuel pressure.
- Intake air leak.
Fixing Chrysler Error Code p0303 Step By Step
Address cylinder 3 misfire by checking spark plugs, ignition coil, and fuel injector.
- To fix a Chrysler OBDII code P0303, start by reviewing the possible causes related to cylinder 3 misfire.
- Visually inspect the ignition system components such as spark plugs, ignition coils, and spark plug wires for any signs of wear or damage.
- Check the fuel injector for proper operation and ensure it is delivering fuel to the cylinder correctly.
- Test the compression in cylinder 3 to verify the engine’s mechanical condition.
- If all components check out, consider swapping the ignition coil or fuel injector with another cylinder to see if the misfire follows.
- Finally, reset the engine control module (ECM) to clear the code and monitor the vehicle for any recurring issues.
Cost Of Fixing Chrysler p0303 Fault Code
Diagnosing and repairing Chrysler fault code P0303 typically involves addressing cylinder 3 misfire issues.
The cost to diagnose and fix a Chrysler OBD code P0303 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
Costs may vary based on shop rates, complexity of the issue, and any additional parts or labor needed for the repair.
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Details of the Chrysler p0303 OBD Code
Chrysler code P0303 indicates a misfire in cylinder 3.
Code P0303 means a misfire was detected in cylinder 3. It’s triggered by the Engine Control Module (ECM) based on crankshaft speed fluctuations.
This code indicates that cylinder 3 is not contributing properly to the engine’s operation, causing a rough running condition.
The misfire could be due to issues with the spark plug, ignition coil, fuel injector, compression, or airfuel mixture.
The ECM monitors the crankshaft position sensor signal to detect the misfire in cylinder 3.
Mechanic’s Tech Notes
Detailed information on diagnosing and repairing Chrysler code P0303 related to cylinder 3 misfire.
To diagnose and fix OBDII code P0303 on a Chrysler vehicle, which indicates a misfire in cylinder 3, you can start by checking the ignition system components such as spark plugs, ignition coils, and spark plug wires for any faults.
Use a voltmeter to test the ignition coil for proper voltage supply.
Additionally, perform a compression test on cylinder 3 to ensure there are no internal engine issues causing the misfire.
If these components check out, consider inspecting the fuel injector for cylinder 3 for proper operation.
A scan tool can be used to monitor live data and identify any anomalies in the fuel system.
Remember to clear the code after repairs and test drive the vehicle to ensure the issue is resolved.
FAQ
Common causes of OBD code P0303 in a Chrysler vehicle include faulty spark plug #3, clogged/faulty fuel injector #3, faulty ignition coil #3, and poor electrical connections.
Diagnose P0303 misfire in Chrysler: Check spark plug, fuel injector, ignition coil #3. Inspect wiring for damage, poor connections. Repair as needed for fix.
It is not safe to continue driving with OBD code P0303 on a Chrysler. Address the causes like faulty spark plug, fuel injector, or ignition coil immediately.
Wrap Up
If your Chrysler is running rough with OBDII code P0303, it may indicate a misfire in cylinder 3. Possible causes include a faulty spark plug, ignition coil, fuel injector, or low compression in that cylinder.
To address Chrysler OBDII code P0303, start by inspecting the spark plug, ignition coil, and fuel injector for cylinder 3. Check for any signs of damage or wear.
Perform a compression test to ensure proper cylinder compression.
Additionally, examine the wiring harness and connectors related to these components for any issues.
