U110B Diagnostic Trouble Code

U110B is a kind of OBD-II Diagnostic U-Network Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a U110B diagnostic trouble code may include:

The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Faulty PCM
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Diminished fuel efficiency

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the connectors. Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector.

Process Tips

Diagnostic trouble code U110B is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before U110B.

Fortunately, U110B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U110B Trouble Code For Specific Cars

U110B Lancia Nea SSB Inductive Signature Malfunction
U110B Mazda R
U110B Holden Fe Power Cable For Power Sliding Door Broken
U110B Nissan Cedric Climate Control Temperature Differential Circuit Short To Battery
U110B Opel Olympia Door Ajar LR Circuit Short To Ground
U110B De Dion Bouton 8 Hp HO2S Heater Resistance (Bank 2 Sensor 3)
U110B Audi A8 ANTI THEFT HORN OUTPUT CIRCUIT Short to Gnd