P0451 MERCEDES-BENZ - Evaporative Emission Control System Pressure Sensor Range/Performance
P0451 MERCEDES-BENZ Possible Causes
- Faulty Evaporative Emission System (EVAP) Pressure Sensor
- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
- Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
First diagnose P0451 MERCEDES-BENZ 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 P0451 MERCEDES-BENZ code
Labor: 1.0The cost of diagnosing the P0451 MERCEDES-BENZ 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.
When is the P0451 MERCEDES-BENZ code detected?An improper voltage signal from EVAP control system pressure sensor is sent to Engine Control Module (ECM).
P0451 MERCEDES-BENZ Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0451 Mercedes-benz DescriptionThe Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (ECM) increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.
P0451 MERCEDES-BENZ More InformationNeed more information on how to fix the P0451 MERCEDES-BENZ code?
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