B2687 Diagnostic Trouble Code

B2687 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 B2687 diagnostic trouble code may include:

Vacuum leak on the engine
Reduction in engine performance, especially at low RPM levels
Engine surge
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

Fuel with a large percentage of sulfur will clog the DPF quickly
The Mass Airflow sensor will also cause this problem. Mass Airflow circuit malfunction.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)

Repair Processes :

Look for damage to the tank indicating impact that may have damaged the fuel pump or sender. Look at the plug wires to make sure they are not burnt or laying on the exhaust. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code B2687 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 B2687.

Fortunately, B2687 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B2687 Trouble Code For Specific Cars

B2687 Adler 55 ABS Outlet Valve Coil LF Circuit Open
B2687 Citroen C4 Picasso Ii Fuel Composition Sensor Circuit Low Input
B2687 Vespa 400 Purge Flow Sensor Circuit Malfunction
B2687 Renault Torpedo HO2S Heater Control Circuit High (Bank 1 Sensor 1)
B2687 Mercer 35 Air Suspension LF Height Sensor Circuit Failure
B2687 Toyota 1000 Multi-faults - Bank 2 - With Low Side Shorts
B2687 Bmw Convertible Climate Control Temperature Differential Circuit Open