C1100 Diagnostic Trouble Code

C1100 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 C1100 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
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.
Some aftermarket accessories and performance modifications

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. 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. Look at the plug wires to make sure they are not burnt or laying on the exhaust.

Process Tips

Diagnostic trouble code C1100 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 C1100.

Fortunately, C1100 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C1100 Trouble Code For Specific Cars

C1100 Peugeot 308 Ii EGR Drive Overcurrent
C1100 Citroen C Front Lateral Accelerometer Circuit Failure
C1100 Honda S800 Recirculation Override Circuit Malfunction
C1100 Ford Zx2 Motor Temperature Out of Range
C1100 Smart Fortwo Lamp Air Bag Warning Indicator Circuit Open
C1100 Volvo S70 SCP (J1850) Invalid or Missing Data for Experimental #2
C1100 Fiat 147 Lack Of HO2S Switch - Sensor Indicates Lean