U1810 Diagnostic Trouble Code

U1810 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 U1810 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 :

Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. Check to make sure they are not burnt or corroded. If in doubt, get some Electrical Contact cleaner at any parts store if cleaning of the terminals is needed.

Process Tips

Diagnostic trouble code U1810 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 U1810.

Fortunately, U1810 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1810 Trouble Code For Specific Cars

U1810 Mazda 360 Transmission Transfer Case Contact Plate 'C' Open Circuit
U1810 Italdesign Twenty Seat Belt Switch Circuit Failure
U1810 Jiotto Caspita Seat Front Up/Down Potentiometer Feedback Circuit Short To Battery
U1810 Abarth Ot 1600 A/C Post Heater Sensor #2 Circuit Failure
U1810 Holden Lx Power Steering Pressure Sensor Circuit Range/Performance
U1810 Ford Explorer Iii Memory 2 Switch Circuit Short To Battery
U1810 Caterham 21 Door Ajar LR Circuit Open