Yanmar Immobilizer / Anti-Theft Active
The YANMAR-P1260 (Yanmar) diesel fault code means: Yanmar Immobilizer / Anti-Theft Active. This is a serious severity code.
- Keep driving?
- No — stop driving
- DIY difficulty
- intermediate
- Estimated cost
- $50-$400
What Are the Symptoms of YANMAR-P1260?
- Will not crank on compact tractor
- Key indicator lamp flashing
What Causes YANMAR-P1260? (Most Likely First)
- Wrong key / key chip not paired Likely
- Immobilizer antenna failure around ignition switch Possible
Can I Still Drive with YANMAR-P1260?
No — stop driving. YANMAR-P1260 is rated serious severity. Continuing to drive in this state risks further damage — get it looked at before your next trip.
Frequently Asked Questions
What is Yanmar code P1260?
Yanmar P1260: Yanmar Immobilizer / Anti-Theft Active.
Can I keep operating with Yanmar code P1260?
Do not operate. Risk of engine damage.
How much does Yanmar P1260 cost to fix?
Typical cost: $50-$400. Yanmar SmartAssist / YDT diagnostic software is often required.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose YANMAR-P1260?
Re-learn key in SmartAssist.
Check antenna ring continuity.
P1260 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown:
Which Vehicles Commonly Get YANMAR-P1260?
- Yanmar SA221 / SA324 / SA424 compact tractors
- Yanmar YT235 / YT347 / YT359 compact tractors
- Yanmar LX4100 / LX4900 utility tractors
- Yanmar ViO17 / ViO25 / ViO35 / ViO45 / ViO55 / ViO80 mini excavators
- Yanmar B27-3 / B37-3 / B50-3 compact excavators
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