What does P1297 mean on a Ford?

P1297. Injector High Sides Shorted Together (Diesel). Applies to F-250/F-350 Super Duty with 7.3L Power Stroke.

What causes P1297 on a Ford?

Melted harness fusing both high-side feeds Gasket connector internal short Pinched harness between valve cover and head Severe chafing IDM fault

How do I fix P1297 on a Ford?

Inspect the full harness for melting or pinching Test high-side isolation bank to bank Replace the gasket harness assembly Reroute the harness away from pinch points Confirm isolation after repair

Code

P1297

Injector High Sides Shorted Together (Diesel)

Category: Powertrain - Fuel/Air Metering
Severity: Check Engine Light
Applies to: F-250/F-350 Super Duty with 7.3L Power Stroke
Related: No single generic twin. See OBD Codes List

Findings, check these first

Melted harness fusing both high-side feeds
Gasket connector internal short
Pinched harness between valve cover and head
Severe chafing
IDM fault

Standard procedure

Inspect the full harness for melting or pinching
Test high-side isolation bank to bank
Replace the gasket harness assembly
Reroute the harness away from pinch points
Confirm isolation after repair

Code lookup

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Sources and review

Review: qualified. Read the source limits below.

OBDII.pro: P1297 Ford definition
live reference page (obdii.pro)
Supports: Ford-family meaning for P1297: Injector High Sides Shorted Together
Fetched directly. obdii.pro is a publisher independent of the engine-codes family.

Last updated 2026-09-05.

Report a correction for P1297. Include your vehicle, the issue and a source if you have one.

This fault is part of the Ford fuel and ignition codes guide. It covers the family and the order to check it.