P0332 Ford Explorer
Knock Sensor 2 Circuit Low Input (Bank 2) · Powertrain Code · Medium · Repair: Moderate
What is P0332?
The knock sensor 2 on bank 2 is reading below expected voltage.
When the Ford Explorer triggers code P0332 (knock sensor 2 circuit low input (bank 2)), it typically points to an issue in the powertrain system. Below you'll find the most common causes, symptoms, and repair options specific to the Ford Explorer.
This repair is rated moderate, meaning some experience and specialty tools required.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Ford Explorer.
Common Causes on Ford Explorer
- Failed knock sensor on bank 2 (V6 or V8 engines)
- Wiring harness damage between knock sensor and PCM
- Loose knock sensor mounting — incorrect torque after previous repair
- Cracked knock sensor from thermal stress
Symptoms
- Check engine light
- Reduced power (PCM reduces timing advance)
- Slightly worse fuel economy
- May notice pinging on low-octane fuel
Notes for Ford Explorer
On EcoBoost engines, using 87 octane when 91 is recommended can trigger knock sensor codes — try premium fuel before replacing the sensor.