U02A4 - Lost Communication With NH3 Sensor
U02A4 is a generic network/communication diagnostic trouble code indicating Lost Communication With NH3 Sensor. It relates to the System-Specific system.
DTC Breakdown (SAE J2012)
| System | Network/Communication (U) |
| Type | Generic |
| Subsystem | System-Specific |
| Fault Index | A4 |
| Standard | SAE J2012 / ISO 15031-6 |
What does diagnostic code U02A4 mean?
The dtc/">diagnostic trouble code U02A4 represents Lost Communication With NH3 Sensor. This standard generic code points to a monitored fault condition in the vehicle's Network/Communication network.
Detailed diagnostic guides and specific fix procedures for code U02A4 are currently being compiled. Always verify check engine warnings with a qualified mechanic.
Frequently Asked Questions about U02A4
What does U02A4 mean?
The diagnostic trouble code U02A4 represents Lost Communication With NH3 Sensor. This standard generic code points to a monitored fault condition in the vehicle's Network/Communication network.
What is the system for U02A4?
The U02A4 code is located in the vehicle's Network/Communication network.