P0330 on Chevrolet
Knock Sensor 2 Circuit (Bank 2)
P0330 on Chevrolet vehicles indicates knock sensor 2 circuit (bank 2). Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado 1500. This powertrain code means the engine computer detected a malfunction in the circuit for knock sensor 2, located on engine bank 2 (the cylinder bank not containing cylinder 1). The knock sensor listens for engine 'knock' or 'ping' (abnormal combustion) and lets the computer retard ignition timing to prevent engine damage. This code indicates an electrical/circuit problem with the sensor signal, not necessarily actual knocking. Drivability is often normal, but the engine may run with conservative timing, reducing power and economy and risking damage if real knock occurs. Typical repair costs on Chevrolet range from $350 to $900, depending on the specific model and root cause.
Common Causes of P0330
- •Faulty knock sensor on bank 2
- •Damaged or corroded knock sensor wiring/connector
- •Open or short in the knock sensor circuit
- •Loose or improperly torqued knock sensor
- •Engine ground or shielding issues affecting the signal
- •Faulty engine control module (rare)
P0330 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 P0330 mean on Chevrolet?▼
P0330 stands for "Knock Sensor 2 Circuit (Bank 2)." This powertrain code means the engine computer detected a malfunction in the circuit for knock sensor 2, located on engine bank 2 (the cylinder bank not containing cylinder 1). The knock sensor listens for engine 'knock' or 'ping' (abnormal combustion) and lets the computer retard ignition timing to prevent engine damage. This code indicates an electrical/circuit problem with the sensor signal, not necessarily actual knocking. Drivability is often normal, but the engine may run with conservative timing, reducing power and economy and risking damage if real knock occurs. On Chevrolet specifically, this code is documented across 1 model.
What causes P0330 on Chevrolet vehicles?▼
Common causes on Chevrolet: Faulty knock sensor on bank 2, Damaged or corroded knock sensor wiring/connector, Open or short in the knock sensor circuit, Loose or improperly torqued knock sensor, Engine ground or shielding issues affecting the signal. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0330 on a Chevrolet?▼
Repair costs on Chevrolet range from $350 to $900, depending on the specific model and root cause.
Which Chevrolet models have P0330 documented?▼
Au7o has documented P0330 on 1 Chevrolet model: Silverado 1500.