Typical Malfunction Thresholds
WARNING: This page is about a different variant/trim than selected.
P1451: FUEL TANK PRESSURE SENSOR NOISE
| Frequency that fuel tank pressure change is 0.3 kPa (gauge) [0.04 psi (gauge)] or higher | 10 times or more in 10 seconds |
P1451: FUEL TANK PRESSURE SENSOR STUCK
| Either of the following conditions 1 or 2 is met | - |
| 1. Following condition met when fuel tank pressure is -2.5 kPa (gauge) [-0.4 psi (gauge)] or less, or 3 kPa (gauge) [0.4 psi (gauge)] or higher | - |
| Fuel tank pressure change while fuel vapor-containment valve and vent valve are closed | Less than 0.35 kPa (gauge) [0.051 psi (gauge)] |
| 2. Following condition met when fuel tank pressure is higher than -2.5 kPa (gauge) [-0.4 psi (gauge)], and less than 3 kPa (gauge) [0.4 psi (gauge)] | - |
| Fuel tank pressure change when vacuum introduction for fuel tank | Less than 0.5 kPa (gauge) [0.07 psi (gauge)] |
P1452: FUEL TANK PRESSURE SENSOR RANGE CHECK (LOW VOLTAGE)
| Fuel tank pressure sensor voltage [Fuel tank pressure] | Less than 0.15 V [Less than -20.0244 kPa (gauge) (-2.9035 psi (gauge))] |
P1453: FUEL TANK PRESSURE SENSOR RANGE CHECK (HIGH VOLTAGE)
| Fuel tank pressure sensor voltage [Fuel tank pressure] | Higher than 4.85 V [Higher than 55.6341 kPa (gauge) (8.0669 psi (gauge))] |