P0262
High SeverityCylinder 1 Injector Circuit High
Fuel System
What Does P0262 Mean?
High voltage in cylinder 1 injector circuit. Usually open circuit.
Common Fix
Replace injector or repair wiring
Estimated Cost (DIY)
$40 - $150
Common Causes
How to Diagnose P0262
- 1Check injector connector
- 2Measure resistance (infinite = open)
- 3Check wiring continuity
- 4Replace injector
OEM Diagnostic Flowchart
Scroll to load technician if/then branches.
Read live data and freeze frame for P0262 to pinpoint the cause before buying parts.
Related Resources
Repair guides, symptom pages, and wiring diagrams related to P0262.
OEM Manual Evidence
Browse →A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Terrain AWD V6-3.6L Service Manual | Operation CHARM Operation CHARM : Car repair m...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Terrain FWD V6-3.6L Service Manual | Operation CHARM Operation CHARM : Car repair m...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Acadia FWD V6-3.6L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
A L L Diagnostic Trouble Codes ( DTC ) — 2013 GMC Truck Acadia AWD V6-3.6L Service Manual | Operation CHARM Operation CHARM : Car repair ma...
Related Symptoms
Browse →Exact Vehicle Hubs
Browse →Open the exact vehicle hub grounded by OEM manual evidence related to P0262.
Open the exact vehicle hub grounded by OEM manual evidence related to P0262.
Open the exact vehicle hub grounded by OEM manual evidence related to P0262.
Open the exact vehicle hub grounded by OEM manual evidence related to P0262.
Related Codes
The fuel injector on cylinder 1 has a circuit fault. It may not be firing.
Low voltage in cylinder 1 injector driver circuit.
Cylinder 1 is misfiring — not firing properly. Could be spark plug, coil, injector, or compression issue on that specific cylinder.
Frequently Asked Questions
- What does high circuit mean for an injector?
- High circuit usually means an open connection — the injector is not getting its ground path back to the ECM.
- Can a corroded connector cause this?
- Absolutely — corrosion in the injector connector is a very common cause of open-circuit injector codes.