P169B Diagnostic Trouble Code

P169B is a kind of OBD-II Diagnostic P-Powertrain 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 P169B diagnostic trouble code may include:

Engine surge
Blown fuse (if applicable)
Lack of power
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

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. 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. Now, clear the codes and test-drive the vehicle to see if the code is reset.

Process Tips

Diagnostic trouble code P169B 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 P169B.

Fortunately, P169B is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P169B Trouble Code For Specific Cars

P169B Vauxhall Zafira B PRNDL Input #2 Circuit Failure
P169B Chrysler 300c Engine Oil Temperature Out Of Self Test Range
P169B Dodge Stealth Ignition Start Circuit Short To Battery
P169B Volvo 145
P169B De Soto Firedome Hood Switch Circuit Short To Battery
P169B Nissan Interstar Coast Clutch Solenoid Circuit Malfunction
P169B Lamborghini Cala Shift Solenoid F Control Circuit Low