P1297 Code: Meaning, Symptoms, Causes & Fix

Overview

Code P1297 indicates a fault in Injector High Sides Shorted Together, typically within fuel delivery and pressure control.

Symptoms

engine may stall at idle
hard starting
reduced fuel economy

Common causes

Reference/ground fault affecting injector high sides shorted together
Sensor output out of expected upper range
Connector pin damage/corrosion or harness stress near related components

How to diagnose P1297

Confirm P1297 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to injector high sides shorted together for obvious defects.
Compare live data against expected upper threshold and verify reference voltage.
Check for related DTCs to identify the root-cause chain before replacing parts.
After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code P1297

Moderate: This code is moderate severity: the vehicle may still operate, but fault progression can increase repair cost over time.

Can you drive with P1297?

Most vehicles can be driven short-term with P1297, but postpone heavy load/highway driving until repaired.

If the warning lamp is flashing or drivability/safety is affected, avoid driving and diagnose immediately.

How to fix it (step-by-step)

Repair obvious wiring/connector faults first to prevent repeat parts replacement.
Address the root fault mode (high) in the injector high sides shorted together circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify P1297 remains cleared under the conditions that originally set the code.

Fix options

Perform relearn/adaptation if required.
Replace failed sensor if signal remains high.
Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$220-$1100

Common mistakes when diagnosing P1297

Replacing parts without verifying voltage, ground, and signal integrity first.
Ignoring related stored/pending codes that indicate upstream faults.
Skipping post-repair verification drive cycle and readiness checks.

P1297 in common vehicles

P1297 appears across makes such as Nissan, Hyundai, Kia, Volkswagen. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes P1297?

P1297 is commonly set by high faults affecting injector high sides shorted together.

How much does it cost to fix P1297?

For P1297, repair costs are typically $220-$1100 depending on exact root cause, labor rates, and part quality.

Can I clear P1297 without repair?

You can clear P1297 temporarily, but the code usually returns until the underlying fault is corrected.