Cylinder #3 Misfire Detected
The BOBCAT-P0303 (Bobcat) diesel fault code means: Cylinder #3 Misfire Detected. This is a serious severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- intermediate
- Estimated cost
- $400-$1,800
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Common Symptoms
- Misfire count elevated on cylinder 3
- Rough idle, visible smoke
Probable Causes (Ranked by Likelihood)
- Bad injector cylinder 3 Likely
- Low compression on that cylinder Possible
- Valve clearance out of spec (500 hr check) Possible
Step-by-Step Diagnostic Procedure
Swap injector from another cylinder to confirm if misfire follows.
Wet/dry compression test on cylinder 3.
Check valve lash to Kubota spec.
Frequently Asked Questions
What is Bobcat code P0303?
Bobcat P0303: Cylinder #3 Misfire Detected. This code is reported on Bobcat equipment running the described engine family.
Can I keep working with Bobcat code P0303?
Limited operation only -- finish the current task then shut down for repair.
How much does Bobcat P0303 cost to fix?
Typical repair cost: $400-$1,800. Off-road diesel shop labor runs $125-$175/hr in 2026. Dealer diagnostic software (Bobcat Service Analyzer) is usually required.
P0303 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: