P0906 Code: Meaning, Symptoms, Causes & Fix

Overview

P0906 is triggered when monitoring logic identifies an issue with Gate Select Position Circuit Low affecting powertrain controls.

Symptoms

reduced performance
increased fuel use
check engine light

Common causes

Open circuit in wiring affecting gate select position circuit low
Broken terminal inside harness
Connector pin damage/corrosion or harness stress near related components

How to diagnose P0906

Confirm P0906 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to gate select position circuit low for obvious defects.
Use a continuity test from module pin to component to identify opens/high resistance.
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 P0906

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

Can you drive with P0906?

Most vehicles can be driven short-term with P0906, 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 (open) in the gate select position circuit low circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify P0906 remains cleared under the conditions that originally set the code.

Fix options

Clear corrosion and protect terminals.
Repair open circuit and secure connector lock.
Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$200-$900

Common mistakes when diagnosing P0906

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.

P0906 in common vehicles

P0906 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 P0906?

P0906 is commonly set by open faults affecting gate select position circuit low.

How much does it cost to fix P0906?

For P0906, repair costs are typically $200-$900 depending on exact root cause, labor rates, and part quality.

Can I clear P0906 without repair?

You can clear P0906 temporarily, but the code usually returns until the underlying fault is corrected.