U1123 Engine Error Code

When you check engine light came on code U1123 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the U1123 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on your car models.

U1123 Code Symptoms

U1123 OBD2 specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.

Power Steering Pressure (PSP) Switch Malfunction In Key On, Engine Off Self-Test, this DTC indicates the PSP input to the PCM is high. In Key On, Engine Running Self-Test, this DTC indicates that the PSP input did not change state. Steering wheel must be turned during Key On, Engine Running Self-Test PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged.

U1123 OBD-II Diagnostic Network (U) Trouble Code Description U1123 SCP (J1850) Invalid or Missing Data for Odometer so you have to check ODB-II Engine Error Code list. U1123 Code Review : The reason of U1123 OBD-II Engine Error Code is U1123 SCP (J1850) Invalid or Missing Data for Odometer.

U1123 Code Dictionary Meaning:

u - Network Code - Problem is climate control system, lighting, airbags, etc. 1 - MFG - Manufacturer Specific 1 - Fuel And Air Metering 2 - Cruise Control Servo Indicates Low 3 - TFP Valve Position Switch-Drive Without Drive Ratio

How long can you drive with a U1123 code ?

If your vehicle is displaying a U1123 OBD2 error code but is still running and driving normally, it means that the issue might not be immediately critical or causing immediate harm to the vehicle. However, it's important to address the issue as soon as possible for several reasons:

• Potential for Worsening
• Decreased Fuel Efficiency
• Emissions Testing Compliance
• Risk of Further Damage
• Safety Concerns
• Legal Considerations