C2693 Diagnostic Trouble Code

C2693 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 C2693 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
Reduction in engine performance, especially at low RPM levels

Possible Causes :

A faulty oxygen sensor. This will set a code in itself, however, a faulty oxygen sensor does not automatically condemn the sensor. The code just means that the sensor signal was not within specifications. An air leak or any of the above will cause an erroneous signal. There is a multitude of O2 codes relating to O2 performance which gives a clue to the problematic area.
Some aftermarket accessories and performance modifications
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

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. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. 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 C2693 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 C2693.

Fortunately, C2693 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

C2693 Trouble Code For Specific Cars

C2693 Lotus 16 Torque Converter Clutch Circuit Stuck On
C2693 Chrysler E EV Battery Pack Temperature Fault
C2693 Mitsubishi Verada Barometer Pressure Circuit Malfunction
C2693 Citroen Ds5 Fuel Level Sensor B Intermittent/Bypass Line Monitor
C2693 Austin A35 Autolamp Delay Increase Circuit Failure
C2693 Jaguar Xjs Seat Driver Occupied Input Circuit Short To Ground
C2693 Lagonda 16 Shift Solenoid D Control Circuit Low