What does code P12A2 mean?
|P12A2 VOLKSWAGEN Meaning The ECM sets the OBDII code when the Fuel Rail Pressure Sensor is not to factory specifications.
What happens if the Check Engine Light is faulty?
A faulty sensor will mean the ECU adjusts to decrease the efficiency of the engine, meaning a higher MPG. It will eventually lead to catalytic converter problems, which can cost over £2000. Oxygen sensors can be easily replaced, with the DTC telling you which one is faulty.
Where to plug in the Check Engine light?
Plug the reader into the OBD port of your vehicle. This port is usually located on the underside of the dash area just above the foot well. On some vehicles, you’ll have to remove the door on your fuse box to access this port. Once you have connected the reader, press the “enter” button to turn it on.
How to get rid of the ” Check Engine ” light axleaddict?
If it does not go off, then your engine has a problem. 1. Drive car and let light go off by itself. 2. Turn engine on and off three times in a row. 3. Disconnect and reconnet the battery. 4. Use an OBD code reader. 1. Drive Your Car and Let the Light Go off by Itself
Is there a way to reset the Check Engine light?
If you want to reset the check engine light with an OBD2 scanner, you can follow this guide: How to reset check engine light. For the check engine light to reset itself, you do need to repair the problem and not expect it to just disappear without doing anything about it.
Why is my Check Engine light still on after filling up?
The cap is a crucial part of a car’s fuel delivery system. It notably prevents gasoline fumes from leaving the fuel tank, and it helps keep the whole system under the correct pressure. If your check engine light turns on immediately after a fill-up, pull over and make sure the cap isn’t loose — or still on your car’s roof.
What can I do about the check engine warning light?
What can I do about the check engine warning light? 1 Check dashboard gauges These could indicate low oil pressure or overheating and can be fixed once you pull over. You… 2 Tighten your fuel cap A loose fuel cap can mean your fuel is getting contaminated by dirt, bugs, or water while… 3 Lower your speed & reduce your load More
What does a solid check engine light mean?
A solid light means you should get the car checked soon, while a blinking light needs immediate treatment. Remember that the check engine light in all cases means that engine performance is being impacted, hurting your fuel consumption and wallet as you pay for more fuel. Get the car checked by a mechanic.
How does the Check Engine light affect mpg?
The oxygen sensor monitors the unburnt oxygen from the exhaust. This also monitors how much fuel is burnt which is directly linked to emissions. The sensors are regularly covered in exhaust fumes which can affect the quality of the sensor. A faulty sensor will mean the ECU adjusts to decrease the efficiency of the engine, meaning a higher MPG.
According to the web, P12A2 is related to the fuel rail pressure sensor high, the info that I read indicated that others have replaced the fuel rail pressure sensor but to no avail. No vacumn leaks are evident.