Hello -
My car went into limp mode the other night, got a reduced engine power idrive message, but no cel. Turned off and started again, no issue. Next day, went into limp mode 5 times over the course of 12 miles on the tail of the dragon, man was that a pain (good thing nobody else was following me). I read somewhere that it could be the brake vacuum sensor, but also saw one post saying it could be bad gas. I ran the tank dry, added a few gallons then ran dry again. Filled all the way and drove 250 miles with no issues. Figured it was the gas. Sure enough, tank is low again and I could barely drive 3 miles to work in limp mode and eventually got an SES light and an additional increased emissions idrive indication. I've ordered the brake vacuum sensor as that seems to be the solution, but my code reader shows two secondary messages as P1209 $07e8 and P1209 $07e8pd. What I'm wondering is what the $07e8 things refer to. However, I've also seen it tied to an injector control system pressure fault issue. What are my next steps to figuring out what the issue is? Could it be a fuel pump issue or clogged filter since it could be a fuel pressure issue? Car has 108k miles. Thanks.
My car went into limp mode the other night, got a reduced engine power idrive message, but no cel. Turned off and started again, no issue. Next day, went into limp mode 5 times over the course of 12 miles on the tail of the dragon, man was that a pain (good thing nobody else was following me). I read somewhere that it could be the brake vacuum sensor, but also saw one post saying it could be bad gas. I ran the tank dry, added a few gallons then ran dry again. Filled all the way and drove 250 miles with no issues. Figured it was the gas. Sure enough, tank is low again and I could barely drive 3 miles to work in limp mode and eventually got an SES light and an additional increased emissions idrive indication. I've ordered the brake vacuum sensor as that seems to be the solution, but my code reader shows two secondary messages as P1209 $07e8 and P1209 $07e8pd. What I'm wondering is what the $07e8 things refer to. However, I've also seen it tied to an injector control system pressure fault issue. What are my next steps to figuring out what the issue is? Could it be a fuel pump issue or clogged filter since it could be a fuel pressure issue? Car has 108k miles. Thanks.
