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What needs to be done with error codes P2187, and P2189 on a 2004 Volvo S80 2.9L? The check engine light is on

Vehicle: 2004 Volvo S80 2.9L

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Best answer

P2187 Long fuel trim upper limit

P2189 Long fuel trim Bank 2 upper limit

Inspect for a vacuum leak, especially at the crankcase vacuum hose connection, this code is either caused by is a vacuum leak or the MAF (mass airflow)

Volvo S80 Vacuum Leak Mass Air Flow (MAF) Sensor​ 

Here a broken crankcase connection caused P2189

Volvo S80 Vacuum Leak Mass Air Flow (MAF) Sensor 

Here is another sample of a vacuum leak

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P2187 VOLVO Code - System Too Lean at Idle Bank 1
Read more: https://www.autocodes.com/p2187_volvo.html

P2189 VOLVO Code - System Too Lean at Idle Bank 2
Read more: https://www.autocodes.com/p2189_volvo.html

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