Diagnostic Trouble Code (DTC) Information

Condition 

Fig 1: Detecting Camshaft Flanks On Sensor

Courtesy of VOLVO CARS CORPORATION

Diagnostic trouble code (DTC) ECM-3400 covers camshaft position (CMP) sensor, intake.

Diagnostic trouble code (DTC) ECM-3410 covers camshaft position (CMP) sensor, exhaust.

The engine control module (ECM) checks the pulse width modulation (PWM) signal from the camshaft position (CMP) sensor.

The diagnostic trouble code (DTC) is stored if the signal from the camshaft position (CMP) sensor is missing sporadically. This is interpreted by the engine control module (ECM) as a fault. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute Value 

• None.

Possible Source 

• The camshaft position (CMP) sensor is in the wrong position
• Damaged camshaft position (CMP) sensor
• Loose connections.

Fault symptom[s] 

• The engine is difficult to start.