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Nicolas

Mitsubishi ASX engine problems: warning light on and jerking

Hello everyone, I own a 2014 Mitsubishi ASX with 102,500 km on the odometer. I've noticed that the check engine light is on. In addition, above 60 km/h, I feel engine shudders. Has anyone else experienced this problem or have any advice on what could be causing these symptoms? Thanks in advance for your help!

(Translated from French)

Summary of the thread

A 2014 Mitsubishi ASX owner reported a check engine light and engine shuddering above 60 km/h. The issue arose after replacing the air conditioning condenser. An OBD-II scan revealed a P0299 code, indicating an underboost condition. Suggested solutions include checking for leaks in the intake system, particularly in hoses and intercooler connections, as these could cause a loss of boost pressure and lead to the symptoms described.

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6 comment(s)

CarlyMechanic

Start by checking if there are any error codes stored in the vehicle's computer using an OBD-II scanner. This can provide specific information about what might be causing the check engine light and the engine shudder. Let us know what codes you find, and we can help you further.

Nicolas (community.author)

community_quotation:

community_author_wrote_on

Start by checking if there are any error codes stored in the vehicle's computer using an OBD-II scanner. This can provide specific information about what might be causing the check engine light and the engine shudder. Let us know what codes you find, and we can help you further.

Hello, Thank you for your response. I will perform a diagnostic and keep you informed. The problem occurred immediately after changing the air conditioning condenser (I don't know if there is a relationship or not). I had a decarbonization done in August. The engine starts very well, the idle is very good, but there are cuts above 60 km/h.

(community_translated_from_language)

CarlyMechanic

CarlyMechanic

community_quotation:

community_author_wrote_on

After OBD reset P299

The P0299 code indicates an underboost condition, which means the turbocharger or supercharger is not providing the expected boost pressure. Start by checking for any leaks in the intake system, including hoses and intercooler connections. A leak can cause a loss of boost pressure, leading to the symptoms you're experiencing. If you find any damaged or loose connections, repair or replace them and see if the issue persists. Let me know how it goes or if you have further questions.

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MITSUBISHI

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ASX