P1455 2004 TOYOTA PRIUS - Vapor Reducing Fuel Tank System Malfunction
P1455 2004 TOYOTA PRIUS Possible Causes
- EVAP system large leak detected
- Hose and pipe for EVAP system (broken or loose)
- Fuel system
- Faulty Engine Control Module (ECM)
First diagnose P1455 2004 TOYOTA PRIUS code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P1455 2004 TOYOTA PRIUS code
Labor: 1.0The cost of diagnosing the P1455 2004 TOYOTA PRIUS code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
P1455 2004 TOYOTA PRIUS Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1455 2004 TOYOTA PRIUS MeaningThe Engine Control Module (ECM) detects leakage of evaporative emissions from the bladder membrane by using the heated oxygen sensor and pressure switching valve. By opening the purge VSV and then closing the pressure switching valve, air in the outer tank is drawn into the intake manifold. The ECM checks concentration of hydrocarbon (HC) molecules in the air drawn from the bladder membrane area. Also, the ECM checks the sensor output before and after closing the pressure switching valve. If there is a change in the HC concentration when the pressure switching valve is opened or closed, the ECM will conclude that the bladder membrane is leaking.
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