B1626 Diagnostic Trouble Code

B1626 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 B1626 diagnostic trouble code may include:

Misfire
Misfire
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.
Diminished fuel efficiency

Possible Causes :

Faulty IMRC actuator/sensor
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
An air leak forward of the DPF will change the sensor readings resulting in the code

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code B1626 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 B1626.

Fortunately, B1626 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1626 Trouble Code For Specific Cars

B1626 Holden Vq
B1626 Saab 9.3 Ii Ignition Run/Acc Circuit Open
B1626 Toyota Blade O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
B1626 Renault Concorde Gear Shift Position Circuit Intermittent
B1626 Nissan R300 Crankshaft Position Sensor A Circuit Low Input
B1626 Hummer H1 Right Rear Wheel Pressure Reduction Performance Problem
B1626 Aston Martin 15 Air Suspension RF Corner Up Timeout