B1028 Diagnostic Trouble Code

B1028 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 B1028 diagnostic trouble code may include:

Poor acceleration
Cherry red hot catalytic converter
Possible spark knock (detonation / pre-ignition)
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.
A large air leak at or near the number one oxygen sensor would also cause a lean mixture.

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 B1028 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 B1028.

Fortunately, B1028 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1028 Trouble Code For Specific Cars

B1028 Subaru Baja Left Front Center Sensor Circuit Fault
B1028 Osi 1200 Door Unlock Disarm Switch Circuit Failure
B1028 Jaguar 240 Seat Driver Backward Circuit Short To Battery
B1028 Hudson Jet Right Front Center Sensor Circuit Short to Vbat
B1028 Borgward 1800 Control Module Programming Error
B1028 Opel Filo Dim Panel Decrease Input Circuit Open
B1028 Acura Csx ABS Hydraulic Pressure Differential Switch Input Short Circuit To Battery