What causes P1273 on a Ford?

Open injector solenoid on cylinder 3 Broken under-cover harness wire Unplugged connector Failed injector IDM fault

How do I fix P1273 on a Ford?

Buzz test for cylinder 3 response Inspect the harness under the valve cover Test injector resistance Check connector seating Replace the injector or repair the harness

P1273 Cylinder 3 High to Low Side Open (7.3L Diesel)

Q: What does P1273 mean on a Ford?

P1273 — Cylinder 3 High to Low Side Open (7.3L Diesel). Applies to F-250/F-350 Super Duty with 7.3L Power Stroke.

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: F-250/F-350 Super Duty with 7.3L Power Stroke

What does P1273 mean on a Ford?

P1273 — Cylinder 3 High to Low Side Open (7.3L Diesel). This Ford-enhanced code applies to F-250/F-350 Super Duty with 7.3L Power Stroke.

Common causes of P1273

Open injector solenoid on cylinder 3
Broken under-cover harness wire
Unplugged connector
Failed injector
IDM fault

How to fix P1273

Buzz test for cylinder 3 response
Inspect the harness under the valve cover
Test injector resistance
Check connector seating
Replace the injector or repair the harness