C2102 Diagnostic Trouble Code

C2102 is a kind of OBD-II Diagnostic C-Chassis 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 C2102 diagnostic trouble code may include:

Corroded or damaged connector
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected
Lack of power
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

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
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 :

Oxygen sensors signal the engine management computer the amount of oxygen present in the exhaust, which is used in determining and controlling the fuel ratio. It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code C2102 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 C2102.

Fortunately, C2102 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2102 Trouble Code For Specific Cars

C2102 Alvis Tb21 Air Suspension Compressor Relay Circuit Open
C2102 Hyundai H100 SCP (J1850) Invalid or Missing Data for Brakes
C2102 Siata 1500 Intake Air Temperature Circuit Range/Performance Problem
C2102 Hyundai Dynasty SCP (J1850) Invalid Data from REM
C2102 Chery Eastar Double Locking Door Motor Frozen
C2102 Volkswagen Caravelle Reverse Inhibit Control Circuit Malfunction
C2102 Rapier Sports Fuel Trim Malfunction (Bank 2)