← Back to list

2007 Ford Focus ZX4 SES U1900 Diagnostic Code: Causes and Fixes

Model: 2007 Ford Focus Fault Code: U1900 Posted: 2015-03-18 07:25

I own a 2007 Ford Focus ZX4 SES with a 2.0L engine and automatic transmission. After scanning the vehicle, I received a U190-0 diagnostic code. I've searched online but haven't found specific information about this code for my model. Can anyone provide insight into what U1900 means in a 2007 Ford Focus? Is it related to the CAN bus system or another component? I'm looking for accurate, reliable explanations that match the vehicle's specifications and common fault patterns. Any help would be greatly appreciated.

Related fault codes
U1900
Comments (2)
Anonymous 2015-03-18 10:04

The U1900 code typically indicates a problem in the Controller Area Network (CAN) bus system, such as an open circuit, short to ground, or short to voltage. Have you recently added any electrical components, modified wiring, or replaced any modules? These changes can interfere with CAN communication. Common fault locations include: - ABS module (DLC C251) - Instrument cluster (DLC C220b) - Powertrain Control Module (PCM) (DLC C175b or C1381b) A thorough inspection of the CAN wiring harness and connections is recommended.

Anonymous 2015-03-18 18:47

I just purchased this vehicle and noticed both rear ABS sensor codes: 1235 and 1236. While I haven't confirmed a direct link, it's possible that faulty ABS sensors could contribute to or trigger the U1900 code due to communication issues in the CAN network. If the ABS sensors are replaced or repaired, it may resolve the U1900 issue—especially if the problem stems from sensor-induced CAN bus errors. However, a full diagnostic scan and analysis of the vehicle's data streams is needed to confirm this relationship.