U2488 Diagnostic Trouble Code

U2488 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 U2488 diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
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.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

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. 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. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code U2488 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 U2488.

Fortunately, U2488 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U2488 Trouble Code For Specific Cars

U2488 Farboud Gts Injector Circuit Open / Shorted - Cylinder #3
U2488 Volvo 780 SCP (J1850) Invalid or Missing Data for Engine Air Intake
U2488 Talbot Tagora Mirror Passenger Right Circuit Short To Ground
U2488 Sunbeam 24 Main Catalyst Efficiency Below Threshold (Bank 2)
U2488 Facel Vega Excellence Injection Timing Control Circuit Malfunction
U2488 Gaz 29 O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
U2488 Italdesign Formula