Which is faulty parts or malfunctions can cause trouble code p0446?

The letter P indicates a generic powertrain code, while the number 0446 points more specifically toward a malfunctioning vent control circuit in the evaporative emission control system. Which Faulty Parts or Malfunctions Can Cause Trouble Code P0446?

How much does it cost to diagnose p0446 Chevrolet code?

The cost of diagnosing the P0446 CHEVROLET 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 P0446 CHEVROLET code detected?

What does p0446 do to the EVAP system?

During the leak test, the ECM closes the vent control valve to create a sealed EVAP system. When P0446 is triggered, the ECM has detected a short in the circuitry to activate the vent control valve, or the EVAP system failed to maintain the proper pressure during the active EVAP leak test. What Are The Symptoms Of P0446?

What does diagnostic trouble code ( DTC ) mean?

Evaporative Emission Control System Vent Control Circuit Malfunction What does that mean? This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the model.

What does the trouble code p0446 stand for?

Trouble code P0446 typically turns up in On-Board Diagnostic testing on account of an illuminated Check Engine Malfunction Indicator Lamp. This generic OBD-II code indicates that the evaporative vent valve in the emission control system is malfunctioning.

What are the symptoms of Chevy Silverado p0446 OBDII code?

Most of the time, the only symptom of P0446 is going to be the check engine light. P0446 code will typically not be accompanied by any noticeable symptoms. The service engine soon light will come on, but that is usually about it. You might (not very likely) notice a slight decrease in fuel economy.

When to repair a check engine light p0446?

The driver will likely not notice any symptoms associated with P0446 other than the check engine light being on. However, as with all check engine light diagnostic trouble codes, you should repair it as soon as possible to return the vehicle to normal operation. Scan your vehicle to verify P0446 is the only code present.

Is there a P0420 code on my GMC Yukon?

P0420 is another common trouble code that accompanies P0446. P0446 code will typically not be accompanied by any noticeable symptoms. The service engine soon light will come on, but that is usually about it. You might (not very likely) notice a slight decrease in fuel economy. P0446 may also cause a slight gas smell.

Why does p0446 cause fuel tank to crack?

Building their nests in the vent line blocks the flow, some of them so bad that they cause EVAP DTCs to be set, including P0446, and some so bad that they’ve caused canisters and fuel tanks to crack.

What does a diagnostic trouble code p0446 mean?

P0446 is an OBD2 diagnostic trouble code that indicates a fault within the evaporative emission control system. Other EVAP system codes may be seen with P0446.

What does code p0446 mean?

P0446 is a diagnostic trouble code (DTC) for “Evaporative Emission Control System Vent Control Circuit Malfunction”.

Is it safe to drive with a code p0446?

It often appears with other codes, such as P0420, P0441, or P0440. P0446 is normally not an immediate threat to the drive-ability of your vehicle. Certainly anytime the service engine soon light is on, it’s good to deal with it as soon as possible though. It is often accompanied by P0442.

What is the Check Engine code p0445 for?

P0445 is a diagnostic trouble code (DTC) for “Evaporative Emission Control System Purge Control Valve Circuit Shorted”.

Which is faulty parts or malfunctions can cause trouble code p0446?