U0237 Diagnostic Trouble Code

U0237 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 U0237 diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
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 :

Now, clear the codes and test-drive the vehicle to see if the code is reset. 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.

Process Tips

Diagnostic trouble code U0237 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 U0237.

Fortunately, U0237 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

U0237 Trouble Code For Specific Cars

U0237 Gsm Delta Passenger Sid, Side crash sensor mount fault
U0237 Hyundai Panel SCP (J1850) Invalid or Missing Data for Compact Disc
U0237 Simca Oceane Interior Lamp Override Switch Short to Ground
U0237 Honda Pilot Ii Rear Doppler Sensor Circuit Failure
U0237 Opel Zafira Door Lock Cylinder Circuit Open
U0237 Jaguar Xj-220 Seat Driver Front Up Switch Circuit Open
U0237 Lada 1300 Shift Malfunction