C3093 Diagnostic Trouble Code

C3093 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 C3093 diagnostic trouble code may include:

Hesitation upon acceleration
Excessive exhaust leak
Rich or lean exhaust
If the DPF is not cleared the ECU will revert to the "Limp Home Mode" until the situation is corrected

Possible Causes :

A large air leak at or near the number one oxygen sensor would also cause a lean mixture.
Faulty IMRC actuator relay (if equipped)
Some aftermarket accessories and performance modifications

Repair Processes :

Now, clear the codes and test-drive the vehicle to see if the code is reset. 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 C3093 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 C3093.

Fortunately, C3093 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C3093 Trouble Code For Specific Cars

C3093 Daimler Double Six Heated Backlite Input Circuit Failure
C3093 Mazda Washu A/C Post Heater Sensor #2 Circuit Failure
C3093 Skoda Octavia I Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
C3093 Suzuki Wagon R Mirror Driver Vertical Feedback Potentiometer Circuit Failure
C3093 Holden Drover Pedal Position Sensor Disagreement btwn Sensors
C3093 Hyundai Coupe SCP (J1850) Invalid Data from GEM
C3093 Giannini 1000 Oil Change Reset Button Circuit Short To Battery