B2458 Diagnostic Trouble Code

B2458 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 B2458 diagnostic trouble code may include:

Rich or lean exhaust
Fuel pressure too low
Engine surge
Poor acceleration

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.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Look for rubbing, scraping, bare wires, worn spots or melted plastic connectors. Pull the connectors apart and carefully look at the terminals (the metal parts) inside the 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. 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 B2458 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 B2458.

Fortunately, B2458 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2458 Trouble Code For Specific Cars

B2458 Toyota Venza Passenger Rear Seat Down Switch Circuit Short to Battery
B2458 Mitsubishi Raider Aux Heater Flame Out Fault
B2458 Turner 1220 Pedal Position Sensor A Circuit Intermittent
B2458 Ford Expedition 3 Memory 1 Switch Circuit Short To Ground
B2458 Honda Jazz Pump Rotor Control Underfueling
B2458 Fso Polonez O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
B2458 Chevrolet Citation Driver Rear Door Ajar Circuit Open