I have a 96 960. Yesterday, when I pushed the brake pedal, it took a little more pressure to slow down and as long as you hold the pedal it makes a low pitched hissing noise, which lead me to believe the brake power booster. Shortly thereafter(30min or so) the check engine light came on. I took it and had the codes pulled and it read P0172. Which says "Fuel Trim too Rich (Bank 1)". What does that code mean? The guy at Auto Zone did not have a clue. Could the brake presure problem and engine light be related or coincidential. Thanks for any help, Chris.
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