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 Lancia Thesis Starter Disable Circuit
P169B Smart Fortwo Ii Lamp Anti-Theft Indicator Circuit Failure
P169B Kia Clarus Seat Switch Lumbar Deflate Circuit Failure
P169B Volkswagen T5 SCP (J1850) Invalid Data from SCLM
P169B Subaru Outback LF LAMP HIGH BEAM CIRCUIT Short to Battery
P169B Jeep Varsity Seat Driver Recline Backward Circuit Short To Ground
P169B Aston Martin Am Vantage Air Suspension RF Height Sensor Circuit Short To Battery