P0332: Knock Sensor 2 Circuit Low Input (Bank 2)
4 vehicles · 3 makes · $350-$7,500 repair
Most Reported On
P0332 is an OBD-II diagnostic trouble code meaning “Knock Sensor 2 Circuit Low Input (Bank 2).” This code means the Engine Control Module detected a low-voltage (or low-amplitude) signal from Knock Sensor 2 on Bank 2 — the cylinder bank that does not contain cylinder 1. The knock sensor 'listens' for engine detonation (pinging) so the computer can retard ignition timing to protect the engine. P0332 sets when this sensor's signal is consistently lower than expected, suggesting the sensor, its wiring, or connection is faulty. To stay safe, the ECM may pull timing, which can slightly reduce power and fuel economy. This code is most commonly reported on 2011-2019 Kia Sorento (EX, L, LX, S), 2000-2006 Chevrolet Silverado 1500, and 2000-2006 GMC Sierra 1500, plus 1 other vehicle, with repair costs ranging from $350 to $7,500.
Common Causes
Typical Repair Cost
Based on 4 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0332, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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Vehicles Affected (4)
FAQ
What does P0332 mean?
P0332 stands for "Knock Sensor 2 Circuit Low Input (Bank 2)." This code means the Engine Control Module detected a low-voltage (or low-amplitude) signal from Knock Sensor 2 on Bank 2 — the cylinder bank that does not contain cylinder 1. The knock sensor 'listens' for engine detonation (pinging) so the computer can retard ignition timing to protect the engine. P0332 sets when this sensor's signal is consistently lower than expected, suggesting the sensor, its wiring, or connection is faulty. To stay safe, the ECM may pull timing, which can slightly reduce power and fuel economy.
What are the most common causes of P0332?
The most common causes of P0332 are: Faulty knock sensor on Bank 2, Open or high-resistance wiring in the knock sensor circuit, Corroded or loose knock sensor connector, Poor ground for the knock sensor, Chafed or shorted sensor harness, Improper sensor torque/mounting (poor contact with the block), Faulty ECM/PCM knock sensor input. The specific cause varies by vehicle.
How much does it cost to fix P0332?
Repair costs for P0332 range from $350 to $7,500, depending on the vehicle and root cause.
Which vehicles are affected by P0332?
Au7o has documented P0332 across 4 vehicle models from 3 manufacturers: Chevrolet, GMC, Kia.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.