P0332 on Chevrolet
Knock Sensor 2 Circuit Low Input (Bank 2)
P0332 on Chevrolet vehicles indicates knock sensor 2 circuit low input (bank 2). Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado 1500. 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. Typical repair costs on Chevrolet range from $350 to $900, depending on the specific model and root cause.
Common Causes of P0332
- •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
P0332 on Chevrolet by Model
Chevrolet Silverado 1500(1 issue)
- Knock Sensor Water Intrusion Under Intake Causing Persistent Check Engine Light and Reduced Performance2000-2006
On 4.8L, 5.3L, and 6.0L GMT800 V8 trucks, the valley-mounted knock sensors and harness are prone to water intrusion from the cowl/intake area. Moisture corrodes the sensors or harness connectors, leading to false knock readings, a check engine light, and timing retard that can make the truck feel sluggish. This is one of the best-known early Silverado engine electrical issues and is heavily documented by owners and repair shops.
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What does P0332 mean on Chevrolet?▼
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. On Chevrolet specifically, this code is documented across 1 model.
What causes P0332 on Chevrolet vehicles?▼
Common causes on Chevrolet: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0332 on a Chevrolet?▼
Repair costs on Chevrolet range from $350 to $900, depending on the specific model and root cause.
Which Chevrolet models have P0332 documented?▼
Au7o has documented P0332 on 1 Chevrolet model: Silverado 1500.