P1A92 Diagnostic Trouble Code

P1A92 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 P1A92 diagnostic trouble code may include:

Faulty or damaged wiring
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly
Poor fuel economy
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.
A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.

Repair Processes :

If all testing has passed so far yet you still have the same code, check your scan tool and see if it can open and close the IMRC valve. 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.

Process Tips

Diagnostic trouble code P1A92 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 P1A92.

Fortunately, P1A92 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P1A92 Trouble Code For Specific Cars

P1A92 Atalanta V12 Air Temperature Internal Sensor Circuit Open
P1A92 Hyundai Coupe SCP (J1850) Invalid Data from GEM
P1A92 Subaru Outback 2 LF LAMP LOW BEAM CIRCUIT Failure
P1A92 Hino Contessa Pedal Correlation PDS1 and LPDS Low
P1A92 Ginetta G40 Output Speed Sensor Circuit Malfunction
P1A92 Toyota Caldina O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
P1A92 Daewoo Lacetti Gate Select Actuator Circuit Range/Performance