2012 hyundai elantra fuel system monitor not ready

2012 hyundai elantra fuel system monitor not ready install#
2012 hyundai elantra fuel system monitor not ready code#
2012 hyundai elantra fuel system monitor not ready plus#

I’d like to say that I know exactly how the bad grounds affected the O2 readings, but I’m afraid I can’t. Photo 2: High-pressure pump, driven off of the camshaft.Ī quick search on iATN covered the steps we already took, but also mentioned problems with the grounding of the alternator bracket to the block, as well as the engine ground and body grounds near the battery. At this point, we’re back to looking into our service info and checking for issues on iATN, something that should have been among our first steps.

2012 hyundai elantra fuel system monitor not ready code#

It took awhile, but the code eventually still set. With the now-quiet exhaust system, the signal from the O2 sensor looked better. Knowing that the exhaust leak could be an issue, we replaced the flex section of the pipe. When we monitored the front O2 signal, it appeared to be switching well, but it was hard to tell if they were all within a second. While the Elantra ran well, it took only a couple of drives before we had the O2 code back. Photo 1: The Hyundai gasoline direct injector looks like port injection, but this injector does find its way into the cylinder.

I don’t know about you, but I can’t tell a 10-degree difference on the average temp gauge. If the thermostat doesn’t let it get there, you’re wasting your time trying to run the test. The ECUs know nothing about being “close enough.” If the system is looking for 104º F, then 105º F won’t cut it and the test will not be run (and some tests will look for an even higher temp). There are additional parameters that have to be met depending on the monitor, and it’s well worth the time to look them up on a service information system. In the case of the Elantra, we’re looking for a starting coolant temp below 104º F with a gain to 120º F before the test will run. We’ve been in the habit of having the scanner hooked up whenever we’re road testing a driveability problem or setting monitors to confirm setting criteria. Our experience with Hyundais taught us that they can be a bit of a challenge when it comes to setting monitors, and it really pays off to be sure the setting criteria is met. While we were aware that fresh air entering the exhaust system could lead to an O2 code, with our budget constraints in mind, we set out to run the monitors in an attempt to get the car through state inspection, giving the customer some time to budget for the necessary additional repairs. With the gasket replaced and the engine running smoothly, we checked the output of the rear O2 sensor and it looked to be operating as expected in spite of the exhaust leak.

2012 hyundai elantra fuel system monitor not ready install#

When we were sure the misfire would be repaired and the car would certainly run better with the manifold gasket, we received authorization to replace the gasket and install a much-needed set of spark plugs. Knowing that there was little cushion in this job, we checked compression as well as the ignition components when the gasket was replaced. We used a stethoscope where the sound of the leak was obvious in order to confirm and pinpoint the problem. A quick shot of intake cleaner at the manifold flange smoothed the engine out, letting us know we were on the right track. 3 cylinder, so we went right to the manifold in that area.

The first step was to deal with the misfire since we also had the system lean code. The customer had already installed a new O2 sensor, but the code persisted.Įven though we explained to the customer that there was no way we could give a firm price on the job, we received authorization to get started with the diagnosis and to get further authorizations as the job progressed.

2012 hyundai elantra fuel system monitor not ready plus#

3 cylinder (P0303), as well as codes for a slow response from the front O2 sensor (P0133), a system lean code, plus there was a slight, but audible, exhaust leak at the flex pipe before the cat. The obvious problem was a code for a solid misfire in the No. As is often the case with this kind of job, the customer was reluctant to make a big investment but also wasn’t in the position to buy a new car.