U1919 Diagnostic Trouble Code

U1919 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 U1919 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
Rich or lean exhaust

Possible Causes :

Faulty IMRC actuator relay (if equipped)
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code U1919 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 U1919.

Fortunately, U1919 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U1919 Trouble Code For Specific Cars

U1919 Toyota Hilux Viii Oil Level Lamp Circuit Short To Battery
U1919 Mitsubishi Delica Audio Tape Deck Mechanism Fault
U1919 Aston Martin Le Mans Air Suspension Secondary Front Inflator Solenoid Output Circuit Failure
U1919 Daihatsu Fourtrak Gear shift position Fault
U1919 Nissan Fuga Clutch Position Fault
U1919 Panther Lima Driver Sid, Side mount Airbag Circuit Short to Ground
U1919 Honda S-mx RESCU/VEMS Input Circuit Open