The OBD code P0303 for Acura 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 faulty spark plug #3, ignition coil #3, or fuel injector #3, among others.
It is a moderate issue that should be addressed promptly.
A possible fix involves checking and replacing the faulty components mentioned.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 10.0 (Out of 10) |
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Symptoms of the Acura p0303 OBD Code
The vehicle may experience a rough idle or misfire under specific fault code Acura P0303.
- With Acura 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 Acura p0303 OBD Code
Fault code P0303 on an Acura indicates a misfire in cylinder 3.
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- P0303 in an Acura can be caused by a valve adjustment.
- A faulty spark plug in cylinder #3.
- A faulty ignition coil in cylinder #3.
- A clogged or faulty fuel injector in cylinder #3.
- An intake air leak.
- Insufficient compression in cylinder #3.
- Incorrect fuel pressure.
Fixing Acura Error Code p0303 Step By Step
Address the misfire in cylinder 3 on the Acura by checking ignition components and fuel delivery.
- To fix the Acura OBDII code P0303, first, review the possible causes related to cylinder 3 misfire.
- Visually examine the wiring harness and connectors specific to cylinder 3.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Consider swapping the ignition coil and spark plug from cylinder 3 with those from a different cylinder to see if the misfire moves.
- Perform a compression test on cylinder 3 to check for any internal engine issues.
- If the issue persists, inspect the fuel injector for cylinder 3 for proper operation and consider replacing it if necessary.
Cost Of Fixing Acura p0303 Fault Code
The repair for Acura P0303 may involve diagnosing and fixing cylinder 3 misfire issues.
The cost to diagnose and fix the Acura OBD code P0303 is based on an estimated 1. 0hour repair time.
Labor rates usually range from $75 to $150 per hour, so the total cost could be between $75 and $150, depending on shop rates and the complexity of the repair.
Details of the Acura p0303 OBD Code
Acura 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 combustion cycle, leading to a rough running engine and potential power loss.
Misfires can be caused by issues such as faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, or low compression in the cylinder.
The ECM monitors the crankshaft speed to detect variations caused by misfires in specific cylinders, in this case, cylinder 3.
Mechanic’s Tech Notes
For Acura code P0303, cylinder 3 misfire detected, likely caused by spark plug, ignition coil, or fuel injector issue.
To diagnose and fix OBDII code P0303 on an Acura, start by checking the ignition system components like spark plugs, ignition coils, and spark plug wires for any issues.
Use a multimeter to test the resistance of the ignition coil and ensure it falls within the manufacturer’s specifications.
Inspect the fuel injector for proper operation and check for any vacuum leaks that could cause a misfire in cylinder 3. Additionally, perform a compression test on cylinder 3 to rule out any internal engine issues.
If all these components check out, consider performing a power balance test to pinpoint the exact cause of the misfire.
FAQ
Common causes of OBD code P0303 in an Acura: faulty spark plug #3, faulty ignition coil #3, clogged/faulty fuel injector #3, intake air leak, insufficient cylinder #3 compression.
Diagnose P0303 by checking spark plug, ignition coil, fuel injector #3, valve adjustment, compression, air leaks, fuel pressure. Inspect wiring and connectors for damage.
It is not safe to continue driving with OBD code P0303 on your Acura. Address the causes mentioned, such as faulty spark plug or ignition coil #3.
Wrap Up
If your Acura is experiencing a misfire with OBD code P0303, you may notice rough idling, lack of power, or engine vibrations.
Possible causes include a faulty ignition coil, spark plug, fuel injector, or vacuum leak affecting cylinder 3. To address Acura OBD code P0303, start by inspecting the ignition coil, spark plug, and fuel injector for cylinder 3. Check for proper connections, wiring integrity, and component functionality.
Consider performing a compression test to rule out internal engine issues.
