1. an Illuminated Check Engine Light

The Check Engine Light Flickering on Your Dashboard Is the First Noticeable Symptom for Any Engine Code, Including Dtc P0327 and P0332 (Both Knock Sensor Error Codes.)

2. a Pinging or Knocking Sound

If You Have Code P0332, the Output Signal from the Knock Sensor Is Too Low to Signal the Ecm When Your Engine Produces a Pinging or Knocking Sound.

3. Sudden Loss of Engine Power

Your Engine Losing Power Is Another Common Sign of a Malfunctioning Knock Sensor or Code P0332.

4. an Overheated Engine

An Overheated Engine Could Result from Faulty Ignition Timing Going Undetected by a Bad Knock Sensor. However, It Could Also Happen When You Have a Faulty Serpentine Belt or Engine Cooling System.

5. Increased Nox Emissions

An Engine Problem Related to the “Knock Sensor 2 Circuit Low Input” Error Could Damage Your Vehicle’s Catalytic Converter.

6. Decreased Fuel Efficiency

A Problem in Your Vehicle’s Ignition Timing or Fuel Trim May Cause Your Engine to Burn More Fuel to Propel the Vehicle Forward, Resulting in Fuel Consumption Spikes.

Knock Sensor 2 Circuit Low Input (Bank 2)

By Robert Thorne

• Oct 9, 2026 • 2 min read

Knock Sensor 2 Circuit Low Input (Bank 2)

Direct Answer • Key Takeaway

Many Potential Signs Indicate a “Knock Sensor 2 Circuit Low Input” Error.

Robert Thorne

Automotive & Future Transportation Editor

Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.

Tags: p0332