P110A Diagnostic Trouble Code

P110A 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 P110A diagnostic trouble code may include:

Lack of power
Faulty O2 Sensor
Poor acceleration
Engine surge

Possible Causes :

Rarely - faulty Powertrain Control Module (PCM-programming required after replacement)
Rough running engine due to misfiring plugs. Many engines have misfire codes to indicate the cylinder effected, such as P0307 for number 7.
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 :

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. Now, clear the codes and test-drive the vehicle to see if the code is reset. Replace the oxygen sensor that is downstream from the catalytic converter on the side of the engine that does not contain cylinder #1. Also, if a oxygen sensor code stating "heater circuit malfunction" the sensor has most probably failed.

Process Tips

Diagnostic trouble code P110A 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 P110A.

Fortunately, P110A is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

P110A Trouble Code For Specific Cars

P110A Nissan Tino Cylinder #3 High To Low Side Open
P110A Lancia Delta Speed Wheel Sensor LR Input Circuit Failure
P110A Ford Mondeo 4 Mirror Driver/Passenger Switch Circuit Open
P110A Vauxhall Velox Pressure Control Solenoid Electrical
P110A Mitsubishi Nessie Aux Blower Sense Switch Circuit Failure
P110A Great Wall Wingle Passenger Seat Rearward Switch Circuit Short to Battery
P110A Mercedes C 220 ABS Hydraulic Valve Circuit Failure