Hey, all. First time back here with the new community…I used to post somewhat regularly back about 4 years ago but I’ve been gone a while. My 2009 Mazda3 is giving me a headache and I thought I would see what advice you guys have.
Right before my car went out of warranty, I had a check engine light with trouble code P2128, accelerator position pedal (APP) sensor 2, high voltage. I took it to the dealer, they couldn’t/wouldn’t fix it and told me that if it happened again they’d cover it under warranty. Well it didn’t happen again for 13 months, and guess what, the dealer said they wouldn’t look at the car without a $100 diagnostic fee, which would only be refundable if they decided to cover it under the now expired warranty. Oh, and didn’t I know that they would only extend my warranty 12 months from the original trip in? I was out of luck, and I felt lied to, at least by omission of that important timeframe, at my first visit, so I won’t be returning to the dealer.
I decided to see if it continued to be a problem before I took the car in. No new codes for 8 months, and then it happened again this morning. When this code triggers the check engine light, it puts the car into limp mode, so we drove it around the block and were able to clear the code. I drove to work with no problems.
- Whether I should try just replacing the sensor since the dealer checked the wiring for problems initially;
- How to do that, such as where it’s located; and
- Any ballpark costs/number of book hours for parts and repairs at an independent mechanic?
If this is a matter of replacing the accelerator pedal, is that something I can do myself?