Injector Circuit Open - Cylinder #1
The PERKINS-P0201 (Perkins) diesel fault code means: Injector Circuit Open - Cylinder #1. This is a serious severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- intermediate
- Estimated cost
- $380-$700 injector
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Common Symptoms
- Misfire
- White smoke cold
- Rough idle
Probable Causes (Ranked by Likelihood)
- Perkins injector solenoid failure Likely
- Harness chafe at valve cover Likely
Step-by-Step Diagnostic Procedure
Perkins EST cylinder balance test.
Swap injector between cylinders.
Frequently Asked Questions
What is Perkins fault code P0201?
Perkins P0201 means: Injector Circuit Open - Cylinder #1. Serious code -- address promptly to avoid inducement / further damage.
Can I keep operating with Perkins P0201?
Serious fault -- you can move the machine to a shop but don't run it under load. Diagnose with Perkins EST / CAT ET (kin to CAT-badged machines).
How much does it cost to fix Perkins P0201?
Repair cost range: $380-$700 injector.
P0201 on Other Platforms
The same code ID appears across other engines, vehicles, and equipment. Diagnostic flow varies by platform — see the matching breakdown: