U1993 Trouble Code

View U1993 obd/2 error code description and symptoms. U1993 engine photo

The Camshaft Position sensor will signal the Engine Control Module when the #1 cylinder is ready for the spark plug to fire (top-dead-center on compression stroke). The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

U1993 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine U1993 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If air bag passenger circuit short to ground so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the air bag passenger circuit short to ground.

U1993 is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

Common Causes of U1993

A common cause of code U1993 is the failure of Air Bag Passenger Circuit Short To Ground, but there are several other possible causes as well, such as ;

Clogged or faulty fuel injector (s)
EVAP system hose leaking
Fuel injectors harness is open or shorted
Faulty oil control valve (OCV)

U1993 code for all cars

You can view according U1993 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+U1993 Dodge Stratus Ii

+U1993 Daewoo Lacetti

+U1993 Alfa Romeo 147

+U1993 Bmw B10

+U1993 Mahindra Commander

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

About Us | Contact | Privacy