Pull it off & plug it (usually about a golf tee size) and cap the valve. See if that makes a difference. (This will turn on a check engine light & set an EGR code & is not permanent. It will just tell you if the EGR system is the problem). kboyd14 November 7, 2011, 4:35pm 5. Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle. ===END PCM DTC U1900-E3===. ===OBDII DTC U1900-C===. Code: U1900 - CAN communication bus fault. Car won't start and immobiliser lights flashing. Engine won't even turn. I have changed the key fob battery a week before this incident because the car alarm would go off randomly at night. Exactly a week after, the car just suddenly showed engine malfunction sign with the immobiliser light flashing fast. Hello everyone! I have bought a ford focus 8/2008 (1600cc, SIDA motor) since this October and I am generally satisfied. Ford Focus Club "engine Malfunction Hi i drive a 2012 ford focus. The engine malfunction light came on. We’ve checked the fuel pump, starter, alternator, battery, and even hooked it to the diagnostic machine and it’s telling me there are no malfunctions detected. Do you have any idea what the could mean? Mechanic's Assistant: Hi there. Is the warning light blinking or Ford Model: focus. Ford Year: 2008. UK/Ireland Location: Northumberland. Posted May 13, 2015. This morning while driving my 2008 2.0tdci had power steering malfunction come up on the Dash along with the battery light I've had a look and the belts still on and the power steering is working ok. Possibly alternator any help appreciated I've had to Check out our Ford Focus overview to see the most problematic years, worst problems and most recently reported complaints with the Focus. 2008 Ford Focus transmission problems with 21 complaints This plays a large role in engine efficiency, improving emissions and the overall operation of your vehicle. A bad PCV valve will affect the performance of your vehicle, so there are a few signs to watch out for before the valve completely fails: 1. Excessive oil consumption and leak. A bad PCV valve may have a leak, which will cause excessive Message comes on dashboard with engine malfunction, lost communication with controller area network; Invalid or Missing Data for Vehicle Security.Disclaimer: The car started fine, but chimed about “engine malfunction” and “acceleration reduced” several times while driving. The cluster would also alternate between the rev counter and speedometer either showing their given values, or dropping to 0. TyKAg0Y.