P0340

Technical Definition:

Camshaft Position (CMP) (Sensor A) Circuit (Bank 1 or Single Sensor

Trouble Code: P0340
Address: 0x0340
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

This indicates that a problem was detected in the camshaft position sensor circuit.

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 as 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:

P0336

Technical Definition:

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

Trouble Code: P0336
Address: 0x0336
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

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:

P0335

Technical Definition:

Crankshaft Position (CKP) (Sensor A) Circuit Malfunction

Trouble Code: P0335
Address: 0x0335
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

The crankshaft position sensor (CKP) measures crankshaft location and relays this information to the PCM (Powertrain Control Module).

Possible Causes:
  • Damaged CKP sensor connector
  • Damaged reluctor ring (missing teeth or not turning due to sheared-off keyway)
  • Sensor output open
  • Sensor output shorted to ground
  • Sensor output shorted to voltage
  • Failed crank sensor
  • Broken timing belt
  • Failed PCM

Possible Symptoms:
  • Vehicle may not start (see above)
  • Vehicle may run rough or misfire
  • MIL illumination

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

Specific Makes:

P0334

Technical Definition:

Knock (Sensor 2) Circuit Intermittent (Bank 2)

Trouble Code: P0334
Address: 0x0334
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

Possible Causes:

Possible Symptoms:

Knock Sensor 2 Circuit Intermittent Bank 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty knock sensor
– Knock sensor circuit poor electrical connection
– Knock sensor harness is open or shorted
– Faulty Engine Control Module (ECM)

Specific Makes:

– Possible Lack/Loss of Power

P0333

Technical Definition:

Knock (Sensor 2) Circuit High (Bank 2)

Trouble Code: P0333
Address: 0x0333
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

Knock sensors are used to detect engine pre-detonation.

Possible Causes:
  • Knock sensor connector is damaged
  • Knock sensor circuit is open or shorted to ground
  • Knock sensor circuit is shorted to voltage
  • Knock sensor has failed
  • Loose knock sensor
  • Electrical interference in circuit
  • Low fuel pressure
  • Incorrect fuel octane
  • Mechanical engine problem
  • Failed/faulty PCM

Possible Symptoms:
  • MIL (Malfunction Indicator Lamp) illumination
  • Audible knocking from the engine compartment
  • Pinging from engine under acceleration
  • Loss of power
  • Irregular RPM

Knock Sensor 2 Circuit High Input Bank 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty knock sensor
– Knock sensor circuit poor electrical connection
– Knock sensor harness is open or shorted
– Faulty Engine Control Module (ECM)

Specific Makes:

– Possible Lack/Loss of Power

P0332

Technical Definition:

Knock (Sensor 2) Circuit Low (Bank 2)

Trouble Code: P0332
Address: 0x0332
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

A knock sensor tells the engine computer when one or more of your engine’s cylinders are “knocking”, that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged.

Possible Causes:
  • The knock sensor is faulty and needs to be replaced
  • There is a wiring open/short/fault in the knock sensor circuit
  • The PCM/ECM has failed

Possible Symptoms:

Knock Sensor 2 Circuit Low Input Bank 2

Possible Solutions:
  • Verify the resistance of the knock sensor (compare it to factory specs)
  • Inspect for broken/frayed wires leading to the sensor
  • Check the wiring and connections leading to/from the knock sensor and PCM/ECM
  • Verify proper voltage is reaching the knock sensor (e.g. 5 volts)
  • Verify proper grounding of sensor and circuit
  • Replace the knock sensor
  • Replace the PCM/ECM

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty knock sensor
– Knock sensor circuit poor electrical connection
– Knock sensor harness is open or shorted
– Faulty Engine Control Module (ECM)

Specific Makes:

– Possible Lack/Loss of Power

P0331

Technical Definition:

Knock (Sensor 2) Circuit Range / Performance (Bank 2)

Trouble Code: P0331
Address: 0x0331
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

Possible Causes:
  • Knock sensor (KS) connector is damaged
  • Knock sensor circuit is open or shorted to ground
  • Knock sensor circuit is shorted to voltage
  • Knock sensor has failed
  • Moisture in knock sensor connectors
  • Incorrect fuel octane
  • PCM has failed

Possible Symptoms:
  • MIL (Malfunction Indicator Lamp) illumination
  • Audible knocking from the engine compartment
  • Pinging from engine under acceleration

Knock Sensor 2 Circuit Range/Performance Bank 2

Possible Solutions:

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty knock sensor
– Knock sensor circuit poor electrical connection
– Knock sensor harness is open or shorted
– Faulty Engine Control Module (ECM)

Specific Makes:

– Possible Lack/Loss of Power

P0330

Technical Definition:

Knock (Sensor 2) Circuit (Bank 2)

Trouble Code: P0330
Address: 0x0330
System: Powertrain
Subsystem: Ignition System or Engine Misfire
Technical Description:

Possible Causes:
  • The “B” knock sensor is faulty and needs to be replaced
  • There is a wiring short/fault in the knock sensor circuit

Possible Symptoms:

Knock Sensor 2 Circuit Malfunction Bank 2

Possible Solutions:
  • Check the resistance of the knock sensor on bank 2 (compare it to factory specs)
  • Check for broken/frayed wires leading to the sensor
  • Replace the knock sensor on bank 2

OBD-II Trouble Code Type:

Diagnostic Step:

Tech Notes:

– Faulty knock sensor
– Knock sensor circuit poor electrical connection
– Knock sensor harness is open or shorted
– Faulty Engine Control Module (ECM)

Specific Makes:

– Possible Lack/Loss of Power