P0201

High Severity

Injector Circuit Malfunction - Cylinder 1

Fuel System

What Does P0201 Mean?

The fuel injector on cylinder 1 has a circuit fault. It may not be firing.

Common Fix

Replace cylinder 1 fuel injector

Estimated Cost (DIY)

$40 - $150

Symptoms

  • ⚠️Cylinder 1 misfire
  • ⚠️Rough idle
  • ⚠️Loss of power
  • ⚠️Check engine light

Related Symptoms

Rough idleCheck engine light on

Common Causes

Faulty cylinder 1 injectorlikely
Damaged wiring to injector 1possible
Corroded connectorpossible
ECM driver failureunlikely

How to Diagnose P0201

  1. 1Check injector 1 connector
  2. 2Measure injector 1 resistance (compare to others)
  3. 3Check for power at injector
  4. 4Swap injector with another cylinder to confirm

OEM Diagnostic Flowchart

Scroll to load technician if/then branches.

Read live data and freeze frame for P0201 to pinpoint the cause before buying parts.

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Related Resources

Repair guides, symptom pages, and wiring diagrams related to P0201.

OEM Manual Evidence

Browse →
2013 GMC Truck Yukon XL Denali AWD V8-6.2L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali AWD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...

2013 GMC Truck Yukon XL Denali 2WD V8-6.2L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali 2WD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...

2013 GMC Truck Yukon XL 4WD V8-6.0L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-6.0L Service Manual | Operation CHARM Operation CHARM : Car repair...

2013 GMC Truck Yukon XL 4WD V8-5.3L A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-5.3L Service Manual | Operation CHARM Operation CHARM : Car repair...

Related Symptoms

Browse →
Rough idleSymptom Hub

Rough idle often traces back to ignition, air metering, vacuum leaks, or timing-related faults before it becomes a full misfire complaint.

Check engine light onSymptom Hub

A check-engine light is a graph entry point into code pages, symptom-specific diagnosis, and the exact repair categories most often associated with those failures.

Exact Vehicle Hubs

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2013 Gmc Truck Yukon Xl 4wd V8 5.3l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0201.

2013 Gmc Truck Yukon Xl 4wd V8 6.0l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0201.

2013 Gmc Truck Yukon Xl Denali 2wd V8 6.2l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0201.

2013 Gmc Truck Yukon Xl Denali Awd V8 6.2l Repair HubManual

Open the exact vehicle hub grounded by OEM manual evidence related to P0201.

Related Codes

P0200: Injector Circuit MalfunctionRelated

General fuel injector circuit fault. The ECM detected an issue with the injector driver circuit.

P0301: Cylinder 1 Misfire DetectedRelated

Cylinder 1 is misfiring — not firing properly. Could be spark plug, coil, injector, or compression issue on that specific cylinder.

P0202: Injector Circuit Malfunction - Cylinder 2Related

Cylinder 2 injector circuit fault.

Frequently Asked Questions

Can I swap injectors to test?
Yes — swap cylinder 1 injector with another. If the code follows to the new cylinder, the injector is bad.
Does P0201 always mean the injector is bad?
Not always — check the wiring and connector first. A corroded or loose connector is a common cause.

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