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P0451: Canister pressure sensor noise TYPICAL MALFUNCTION THRESHOLDS P0451: Canister pressure sensor fixed/flat TYPICAL MALFUNCTION THRESHOLDS P0452: Canister pressure sensor low voltage TYPICAL MALFUNCTION THRESHOLDS P0453: Canister pressure sensor high voltage TYPICAL MALFUNCTION THRESHOLDS WIRING DIAGRAM Fig. 156: Evaporative Emission Control System Pressure Sensor Range/Performance Wiring Diagram INSPECTION PROCEDURE Frequency that EVAP pressure change 0.3 kPa-g (2.25 mmHg-g) or more 10 times or more in 10 seconds EVAP pressure change during reference pressure Less than 0.65 kPa-g (4.87 mmHg-g) EVAP pressure Less than 42.1 kPa-a (315.9 mmHg-a) EVAP pressure More than 123.8 kPa-a (928.4 mmHg-a) NOTE: When a vehicle is brought into the workshop, leave it as it is. Do not Do not disassemble the canister pump module. The Techstream is required to conduct the following diagnostic
2008 Toyota Tundra 2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra
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