C003D Code:

OBD-II Diagnostic Chassis (C) Trouble Code

Possible Cause

Common Symptoms

  1. This condition can be rectified by installing an in line resistor (2.5 ohms) between the signal and ground wires and leaving the exhaust gas temperature sensor disconnected
  2. As the input shaft is turned (by the engine) the electro magnetic input/turbine speed sensor uses the spaces between the splines to provide voltage signal interruptions in the circuit
  3. Typical resistance for this sensor should be approximately 150 ohms but double check manufacturer's specifications prior to testing
  4. Several tools will be instrumental in successfully diagnosing this code

Similar Problems

Accelerator Pedal Position (APP) Sensor 1 Performance
Crankshaft Position Sensor Circuit Performance
TFP Valve Position Switch-Drive Without Drive Ratio

C003D Troubleshooting

White smoke means that the fuel that is being injected into the combustion chamber is not being burned properly. The common causes that produce white smoke range from something as simple as low engine compression or water in the fuel to the fuel pump timing being thrown off because something is starving the fuel from getting to the pump in the manner necessary for the pump to time and work correctly. C003D the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.

How to turn off C003D check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

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