P0452 on Chevrolet
Evaporative Emission Control System Pressure Sensor Low Input
P0452 on Chevrolet vehicles indicates evaporative emission control system pressure sensor low input. Au7o has documented this code across 1 Chevrolet model — most commonly on Colorado. P0452 means the Evaporative Emission (EVAP) system's fuel-tank pressure sensor is sending a signal that is too low — essentially a flat or below-range voltage. This sensor monitors pressure and vacuum in the sealed fuel system so the computer can run leak tests and manage fuel vapors. A persistently low reading tells the PCM the sensor signal is implausible, often from a short in the circuit or a failed sensor. It generally won't hurt drivability but turns on the check engine light and can cause emissions test failure. Typical repair costs on Chevrolet range from $120 to $600, depending on the specific model and root cause.
Common Causes of P0452
- •Failed fuel tank pressure (FTP) sensor
- •Short to ground in the sensor signal wiring
- •Corroded or loose connector at the sensor
- •Open or damaged sensor reference/signal circuit
- •Sensor mounted/seated improperly on the tank or EVAP line
- •Faulty PCM (rare)
P0452 on Chevrolet by Model
Chevrolet Colorado(1 issue)
- EVAP Vent Valve and Charcoal Canister Dust Ingestion Causing Check Engine Light and Hard Refueling2004-2012
First-generation Colorado trucks frequently develop EVAP system faults because the vent valve and canister are mounted in an area exposed to dust, dirt, and road debris. Contamination can clog the vent path or stick the valve, triggering a check engine light and causing the fuel nozzle to click off repeatedly during refueling. This issue is especially common on trucks used on gravel roads or in dusty environments.
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View P0452 across all makes →Frequently Asked Questions
What does P0452 mean on Chevrolet?▼
P0452 stands for "Evaporative Emission Control System Pressure Sensor Low Input." P0452 means the Evaporative Emission (EVAP) system's fuel-tank pressure sensor is sending a signal that is too low — essentially a flat or below-range voltage. This sensor monitors pressure and vacuum in the sealed fuel system so the computer can run leak tests and manage fuel vapors. A persistently low reading tells the PCM the sensor signal is implausible, often from a short in the circuit or a failed sensor. It generally won't hurt drivability but turns on the check engine light and can cause emissions test failure. On Chevrolet specifically, this code is documented across 1 model.
What causes P0452 on Chevrolet vehicles?▼
Common causes on Chevrolet: Failed fuel tank pressure (FTP) sensor, Short to ground in the sensor signal wiring, Corroded or loose connector at the sensor, Open or damaged sensor reference/signal circuit, Sensor mounted/seated improperly on the tank or EVAP line. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0452 on a Chevrolet?▼
Repair costs on Chevrolet range from $120 to $600, depending on the specific model and root cause.
Which Chevrolet models have P0452 documented?▼
Au7o has documented P0452 on 1 Chevrolet model: Colorado.