P0201 Error Code
📋 What Does P0201 Mean?
Injector Circuit / Open — Cylinder 1 — the fuel injector circuit for cylinder 1 has an open circuit.
🔍 Common Causes
- 1Fuel injector electrical connector unplugged
- 2Injector wiring open circuit or short
- 3Fuel injector internal coil failed
- 4PCM driver circuit fault
📞 When to Call a Pro
Fuel injector replacement or PCM diagnosis.
🔧 DIY Fix Steps
- 1Unplug and firmly reconnect the cylinder 1 injector connector
- 2Inspect wiring harness near the injector for damage
- 3With an OBD scanner: check live data for injector pulse width on cylinder 1
- 4Swap injector with an adjacent cylinder to test if code follows the injector
Frequently Asked Questions
What does P0201 mean on a Toyota vehicle?
Injector Circuit / Open — Cylinder 1 — the fuel injector circuit for cylinder 1 has an open circuit.
Can I fix P0201 myself?
Yes, in many cases. Start with: unplug and firmly reconnect the cylinder 1 injector connector If that does not resolve it, fuel injector replacement or pcm diagnosis.
How much does it cost to repair error P0201?
Estimated repair cost: $100–$400 per injector. This varies by region and technician.
Tools That Help With This Diagnosis
Basic troubleshooting tools grouped separately from the actual error-code explanation.
Multimeters
Useful for basic electrical checks when the repair path calls for it and the unit is safely isolated.
Driver sets
Useful when the first obstacle is simply reaching the part or hose involved.
Cleanup tools
Useful for drain and leak faults where standing water hides the problem.
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