P0204
High SeverityInjector Circuit Malfunction - Cylinder 4
Fuel System
What Does P0204 Mean?
Cylinder 4 injector circuit fault.
Common Fix
Replace cylinder 4 injector
Estimated Cost (DIY)
$40 - $150
Common Causes
How to Diagnose P0204
- 1Check connector
- 2Test resistance
- 3Swap with another injector
- 4Replace if confirmed
OEM Diagnostic Flowchart
Scroll to load technician if/then branches.
Read live data and freeze frame for P0204 to pinpoint the cause before buying parts.
Related Resources
Repair guides, symptom pages, and wiring diagrams related to P0204.
OEM Manual Evidence
Browse →A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali AWD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL Denali 2WD V8-6.2L Service Manual | Operation CHARM Operation CHARM : Car...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Yukon XL 4WD V8-6.0L Service Manual | Operation CHARM Operation CHARM : Car repair...
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 →Exact Vehicle Hubs
Browse →Open the exact vehicle hub grounded by OEM manual evidence related to P0204.
Open the exact vehicle hub grounded by OEM manual evidence related to P0204.
Open the exact vehicle hub grounded by OEM manual evidence related to P0204.
Open the exact vehicle hub grounded by OEM manual evidence related to P0204.
Related Codes
Frequently Asked Questions
- Is cylinder 4 easy to reach?
- On inline-4 engines, cylinder 4 is at one end. On V-engines, check your firing order to find which physical cylinder is number 4.
- Can fuel injector cleaner help?
- Not for P0204 — this is an electrical circuit fault, not a clogged injector. Cleaner helps with flow issues, not electrical problems.