P1316 Injector Driver Module Codes Detected (7.3L Diesel)
What does P1316 mean on a Ford?
P1316 — Injector Driver Module Codes Detected (7.3L Diesel). This Ford-enhanced code applies to F-250/F-350 Super Duty, Excursion with 7.3L Power Stroke diesel.
Common causes of P1316
- Failing injector driver module (IDM)
- Faulty fuel injector pulling the IDM circuit down
- Chafed under-valve-cover injector harness
- Water intrusion into the IDM housing
- Low system voltage during injector firing
How to fix P1316
- Run an injector buzz test with a diesel-capable scanner
- Note which injectors sound weak — inspect that bank first
- Remove the valve covers and inspect the injector harness for chafing
- Check the IDM for water damage and connector corrosion
- Replace the failed injector or IDM per buzz test results