U3488 Diagnostic Trouble Code

U3488 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 U3488 diagnostic trouble code may include:

Faulty PCM
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Poor acceleration
Rich or lean exhaust

Possible Causes :

The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Fuel with a large percentage of sulfur will clog the DPF quickly
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Use the DVOM to test resistance and continuity on all system circuits if actuator and sensor resistance levels are in compliance with manufacturer's specifications.

Process Tips

Diagnostic trouble code U3488 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 U3488.

Fortunately, U3488 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U3488 Trouble Code For Specific Cars

U3488 Skoda L Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)
U3488 Arnolt Mg Air Suspension Rear Height Sensor Low Signal Circuit Short To Ground
U3488 Nissan Sport Cruise Control Resume Signal Malfunction
U3488 Chrysler New Yorker Evaporative Emission Control System Vent Control Circuit Open
U3488 Simca 1308 Intake Valve Control Solenoid Circuit (Bank 1)
U3488 Saab 93 Ignition Start Circuit Open
U3488 Volvo P1800