P0390

Technical Definition:

Camshaft Position (CMP) (Sensor B) Circuit (Bank 2)

Trouble Code: P0390
Address: 0x0390
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.

This P0390 trouble code indicates that a problem was detected in the camshaft position sensor circuit of bank 2.

Possible Causes:
  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • the crankshaft position sensor may have failed

Possible Symptoms:
  • Hard starting or no start
  • Rough running / misfiring
  • Loss of engine power

Possible Solutions:
  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position Sensor Bs required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0386

Technical Definition:

Crankshaft Position (CKP) (Sensor B) Circuit Range / Performance

Trouble Code: P0386
Address: 0x0386
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

The DTC is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model.

Possible Causes:
  • Bad crank sensor
  • Broken reluctor ring (missing teeth, debris lodged in ring)
  • Reluctor ring dislodged/stripped from it’s stationary location
  • Wiring harness chafing causing short
  • Wiring open in CKP circuit

Possible Symptoms:
  • Intermittent stalling & no start
  • No start
  • MIL (Malfunction Indicator Lamp) illumination
  • Intermittent misfire

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0384

Technical Definition:

Glow Plug Control Module Control Circuit High

Trouble Code: P0384
Address: 0x0384
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

Possible Causes:

Possible Symptoms:

Glow Plug Control Module Circuit High

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Glow Plug
– Glow Plug harness is open or shorted
– Glow Plug circuit poor electrical connection

Specific Makes:

– The engine may be harder to start

P0383

Technical Definition:

Glow Plug Control Module Control Circuit Low

Trouble Code: P0383
Address: 0x0383
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

Possible Causes:

Possible Symptoms:

Glow Plug Control Module Circuit Low

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Glow Plug
– Glow Plug harness is open or shorted
– Glow Plug circuit poor electrical connection

Specific Makes:

– The engine may be harder to start

P0381

Technical Definition:

Glow Plug / Heater Indicator Circuit

Trouble Code: P0381
Address: 0x0381
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

Possible Causes:

Possible Symptoms:

Glow Plug/Heater Indicator Circuit Malfunction

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty Glow Plug
– Glow Plug harness is open or shorted
– Glow Plug circuit poor electrical connection

Specific Makes:

– The engine may be harder to start