P0453 on Pontiac
Evaporative Emission Control System Pressure Sensor High Input
P0453 on Pontiac vehicles indicates evaporative emission control system pressure sensor high input. Au7o has documented this code across 1 Pontiac model — most commonly on Bonneville. P0453 is the opposite of P0452: the Evaporative Emission (EVAP) fuel-tank pressure sensor is reporting a signal that is too high — above the expected range. This sensor reads tank pressure/vacuum so the computer can detect fuel-vapor leaks and control venting and purging. A constantly high signal tells the PCM the data isn't believable, usually from a sensor fault or a wiring short to voltage. It generally doesn't affect how the car drives but illuminates the check engine light and will cause an emissions failure.
Common Causes of P0453
- •Failed fuel tank pressure (FTP) sensor
- •Short to voltage in the sensor signal wiring
- •Open or high-resistance sensor ground circuit
- •Corroded or damaged sensor connector
- •Damaged or chafed wiring in the EVAP sensor harness
- •Faulty PCM (rare)
P0453 on Pontiac by Model
Pontiac Bonneville(1 issue)
- Fuel Tank Pressure Sensor Defect — Fuel Leak and Fire Risk (NHTSA Recall 03V238000, SSEi)2002-2003
Under NHTSA recall 03V238000 (GM recall 03038), the fuel tank pressure sensor on supercharged Bonneville SSEi models is unusually susceptible to malfunction; a failed sensor lets the EVAP system apply excessive vacuum during self-diagnostic testing, damaging fuel system components. Fuel can then leak from the vehicle during refueling, creating a fire hazard in the presence of an ignition source. The campaign covered roughly 102,000 GM vehicles including the Bonneville SSEi, with owner notification beginning October 17, 2003.
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View P0453 across all makes →Frequently Asked Questions
What does P0453 mean on Pontiac?▼
P0453 stands for "Evaporative Emission Control System Pressure Sensor High Input." P0453 is the opposite of P0452: the Evaporative Emission (EVAP) fuel-tank pressure sensor is reporting a signal that is too high — above the expected range. This sensor reads tank pressure/vacuum so the computer can detect fuel-vapor leaks and control venting and purging. A constantly high signal tells the PCM the data isn't believable, usually from a sensor fault or a wiring short to voltage. It generally doesn't affect how the car drives but illuminates the check engine light and will cause an emissions failure. On Pontiac specifically, this code is documented across 1 model.
What causes P0453 on Pontiac vehicles?▼
Common causes on Pontiac: Failed fuel tank pressure (FTP) sensor, Short to voltage in the sensor signal wiring, Open or high-resistance sensor ground circuit, Corroded or damaged sensor connector, Damaged or chafed wiring in the EVAP sensor harness. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0453 on a Pontiac?▼
Repair costs vary widely depending on the root cause and specific Pontiac model.
Which Pontiac models have P0453 documented?▼
Au7o has documented P0453 on 1 Pontiac model: Bonneville.