B1526 Diagnostic Trouble Code

B1526 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 B1526 diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor 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.
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.

Repair Processes :

If you find a related TSB, the information will often help in diagnosing the code in question as TSBs are crested from many thousands of repairs. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground.

Process Tips

Diagnostic trouble code B1526 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 B1526.

Fortunately, B1526 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B1526 Trouble Code For Specific Cars

B1526 Simca 11 Intake Manifold Runner Control (Bank 1) Stuck Open
B1526 Peugeot Proxima Engine Coolant Temperature Circuit Low Input
B1526 Ferrari 355 Intake Air Temperature Circuit Intermittent
B1526 Mercury Lynx Air Suspension LR Height Sensor Circuit Open
B1526 Tatra T87 Mirror Switch Reference Voltage Positive Common Open Circuit
B1526 Allard V Air Bag Driver/Passenger Circuit Short To Ground
B1526 Humber Super Snipe Right Rear Turn Lamp Circuit Short to Battery