U0032 Diagnostic Trouble Code

U0032 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 U0032 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly

Possible Causes :

Defective ECU strategies or components will prevent proper regeneration
The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
Faulty IMRC actuator relay (if equipped)

Repair Processes :

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. Pack the connector cavity with dielectric silicone compound (same stuff they use for light bulb sockets and spark plug wires) and reassemble. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code U0032 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 U0032.

Fortunately, U0032 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0032 Trouble Code For Specific Cars

U0032 Skoda Octavia Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
U0032 Alfa Romeo Mito Air Bag Crash Sensor #1 Ground Circuit Failure
U0032 Honda Step RESCU/VEMS Input Circuit Short to Ground
U0032 Vegantune Evante PSD Not Fully Closed During Self-Test
U0032 Daihatsu Move Glass Break Sensor Failure
U0032 Amc Javelin Air Suspension Front Inflator Solenoid Output Circuit Short To Ground
U0032 Lancia Medusa Split Air #1 Circuit Malfunction