EGR Flow Excessive
The BOBCAT-P0402 (Bobcat) diesel fault code means: EGR Flow Excessive. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- intermediate
- Estimated cost
- $100-$700
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Common Symptoms
- Black smoke under load
- Slight derate
Probable Causes (Ranked by Likelihood)
- EGR valve stuck open (carbon) Very Likely
- EGR position sensor out of calibration Possible
Step-by-Step Diagnostic Procedure
Command EGR to closed; verify position feedback reads 0%.
Remove valve, inspect pintle seat area.
Frequently Asked Questions
What is Bobcat code P0402?
Bobcat P0402: EGR Flow Excessive. This code is reported on Bobcat equipment running the described engine family.
Can I keep working with Bobcat code P0402?
Usually drivable short-term, but fix soon to avoid derate or DPF issues.
How much does Bobcat P0402 cost to fix?
Typical repair cost: $100-$700. Off-road diesel shop labor runs $125-$175/hr in 2026. Dealer diagnostic software (Bobcat Service Analyzer) is usually required.
P0402 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: