U3476 Diagnostic Trouble Code

U3476 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 U3476 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Hesitation upon acceleration

Possible Causes :

A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
Dirty air cleaner element Damaged DPF
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

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. 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. 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.

Process Tips

Diagnostic trouble code U3476 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 U3476.

Fortunately, U3476 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U3476 Trouble Code For Specific Cars

U3476 Ferrari 375 Intake Air Temperature Circuit Range/Performance Problem
U3476 Lincoln Navigator Throttle/Pedal Position Sensor/Switch A Circuit Low Input
U3476 Holden Monaro Power Supply #2 Circuit Short to Ground
U3476 Chrysler Nassau Evaporative Emission Control System Tank Detected (gross leak)
U3476 Chery Qq6 DPFE Sensor Upstream Hose Off Or Plugged
U3476 Sbarro Issima Injection Pump Fuel Metering Control "A" Intermittent (Cam/Rotor/Injector)
U3476 Volkswagen Type 4 SCP (J1850) Invalid or Missing Data for Brakes