B2629 Diagnostic Trouble Code

B2629 is a kind of OBD-II Diagnostic B-Body 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 B2629 diagnostic trouble code may include:

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
Faulty or damaged wiring
Hesitation upon 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.
Defective ECU strategies or components will prevent proper regeneration

Repair Processes :

Once located, visually inspect the connectors and wiring. Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. 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 B2629 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 B2629.

Fortunately, B2629 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2629 Trouble Code For Specific Cars

B2629 Mercedes Cl 420 ABS Inlet Valve Coil Rear Circuit Short To Ground
B2629 Ford Ranger Mirror Passenger Left Circuit Open
B2629 Dodge Polara Ignition Run Circuit Short To Ground
B2629 Am General Hummer Air Suspension Front Compressor Relay Circuit Short To Battery
B2629 Ford Zodiac Motor Relay # 1 Circuit Short to Battery
B2629 Dodge Aspen Ignition Coil B Primary/Secondary Circuit Malfunction
B2629 Kia Sportage 3 Serial Communication Link Malfunction