What Does P0332 Mean?
Knock sensor 2 on Bank 2 is reporting a low voltage signal, below the PCM's minimum threshold. The sensor is either failing, improperly mounted, or has a circuit issue causing insufficient signal strength. The PCM cannot detect knock on Bank 2 and will apply a conservative default timing retard to protect those cylinders from potential detonation damage.
Common Causes
35%
Failed knock sensor 2 with weak or absent piezoelectric output
25%
Knock sensor 2 under-torqued or improperly seated against the engine block
20%
High resistance or open circuit in the knock sensor 2 signal wiring
12%
Corrosion at the sensor or PCM connector reducing signal voltage
8%
PCM or engine ground issue affecting the knock sensor reference voltage
Diagnostic Steps
1
Monitor the knock sensor 2 voltage PID at idle — it should show a fluctuating baseline similar to knock sensor 1. A flat or near-zero reading confirms the low circuit condition.
2
Disconnect knock sensor 2 and measure its internal resistance (typically 50K–600K ohms). An open reading (infinity) means the sensor is dead.
3
Check the signal wire continuity from the sensor connector to the PCM connector. Also check the return wire. Total circuit resistance should be under 5 ohms for each wire.
4
If the sensor is under the intake manifold, inspect for oil or coolant contamination at the mounting surface when removing the sensor. Clean and reinstall with proper torque.
5
Verify PCM and engine ground connections are clean and tight — a common cause of universally low sensor readings.
Estimated Repair Cost
$80 - $450
Parts + labor, varies by vehicle and location
Knock sensor 2 on Bank 2 is reporting a low voltage signal, below the PCM's minimum threshold. The sensor is either failing, improperly mounted, or has a circuit issue causing insufficient signal strength. The PCM cannot detect knock on Bank 2 and will apply a conservative default timing retard to p...
The most common cause of P0332 (Knock Sensor 2 Circuit Range/Performance (Bank 2)) is: Failed knock sensor 2 with weak or absent piezoelectric output
Typical repair costs for P0332 range from $80 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
You can continue driving, but Bank 2 power will be reduced due to defensive timing retard. Avoid high-load conditions such as towing, steep inclines, or aggressive acceleration. Use premium fuel as an extra precaution and schedule the repair within a few weeks.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0332 to identify the root cause.
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Quick Info
Category
Powertrain
System
Ignition / Knock Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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