P0249 - OBD Trouble Code

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The P0249 is a fault code can be described as Turbocharger Wastegate Solenoid B Low.

This diagnostic fault code is a generic powertrain code, which means that it would apply to the OBD-II equipped vehicles. The specific repair steps can vary as it depends upon the vehicle make and model.

Want to learn something more about this fault code? The circuit B is a particular wastegate solenoid wherein multiple solenoids are used in succession. The wastegate solenoid is used in our vehicle to control and monitor the engine boost pressure. It is a solenoid valve which helps in regulating the turbocharger wastegate opening.

What causes this problem with the Turbocharger Wastegate Solenoid B Low?

• There can be some defects in the wastegate solenoid and thus the voltages being reported are also erroneous
• Issue of open or shorted wiring inside the wastegate solenoid circuit
• The electrical connectors located inside the wastegate solenoid may also be corroded, loose or might be completely disconnected

1. Powertrain Control Module - The P0249 code can also arise due to some issues in Powertrain Control Module. So, it is advised to replace them as soon as possible.
2. Turbocharger - Do you remember when was the last time you got your car Turbocharger checked up? A damaged Turbocharger can cause a lot of issues like displaying P0249 code.
3. Wastegate Solenoid - Wastegate Solenoid is an important car part which should never be neglected. May be there is some fault in it due to which P0249 code may start flashing.
4. Engine Boost Pressure - Is your Engine Boost Pressure damaged or broken? Don’t worry as we have solutions for all your problems.

Willing to know some common symptoms of OBD Trouble Code P0249? Your wish is our demand. Have a look at them below:

Common Symptoms

• There can be reduction in your engine’s ability to accelerate
• The turbo pipes or turbocharger may make rattling noises or even “whine” or otherwise give out a high-pitched sound
• The spark plug might be fouling
• There can be abnormal smoke coming from the exhaust
• Issue of hissing noises from the hoses and turbocharger wastegate
• Problem of excessive transmission or engine temperature

Here are some ways with the help of which you will be able to correct the OBD Code P0249

• Make sure that you replace or repair any wires that are disconnected or damaged
• If there are any problems with the connectors, then they should be addressed
• The turbocharger boost sensor should be inspected for any problems
• Check to see if resistance and voltage values are consistent as per the manufacturer’s specifications

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Here are some steps which you should follow in order to diagnose this fault code:

• Turbo charging relies on force air induction so that it can get better gains in horsepower. Various sensors are used by the powertrain control module to assess safe levels of boost that still provide optimal performance results from the engine.
• First of all a mechanic should do a thorough overview of the entire turbocharger system
• Now once after the initial repairs are taken care of, the mechanic should reset the system to see if the code returns, generally after a quick test drive
• The wastegate door may also need to be tested which the mechanic will do with a handheld vacuum pump connected to the wastegate controller

Common Mistakes When Diagnosing The P0249 Code

• Most of the time the problem is just that the wastegate solenoid harness is either shorted or open, which would cause the P0249 code. This is why you should inspect it first before proceeding to take wires out and possibly doing a lot of unnecessary work
• One another thing to keep in mind is to make sure that the wastegate door and linkage are working correctly. If you fail to carry out this initial inspection, you’ll continue receiving that code over and over again