P0335 Code: Crankshaft Position Sensor A Circuit Malfunction

OBD Codes

By Rodney (Mechanics)

Crankshaft position sensor (CKP) monitors the rotational speed and position of the crankshaft, the shaft which couples to the pistons and both the flywheel. The CKP sends a sensory signal to the ECU that in turn allows to adjust the ignition timing, fuel injection, and other functions of the engine. Although its major role is to run the engine efficiently and recognize any potential misfires or engine problems, the CKP works as a backup sensor in the ECU.

What does the P0335 code mean?

The P0335 code is an OBD-II code to report a problem with the CKP sensor A circuit. As samples, the CKP sensor A would provide the most accurate and trustworthy signal to the ECU. Sensor CKP circuit comprises of sensor, wiring and connectors. The ECU will detect any abnormality in the CKP sensor A circuit and store the P0335 code plus illuminate the check engine light.

P0335 Code Crankshaft Position Sensor A Circuit Malfunction

What are the causes of the P0335 code?

There are some probable causes of the P0335 code.

  • The CKD Sensor is faulty or damaged with an impaired engine, hence, engine operations will affect.
  • An unbolted or corroded CKP sensor connection are the first repairs you need.
  • The results red CKP and the moment specifics will be displayed.
  • A non-operational or inoperatively functioning ECU.
  • The source of the defective or damaged engine’s crankshaft or flywheel which emerged.
  • That’s the timing belt or the chain that has missed or not replaced.

What are the symptoms of the P0335 code?

The code P0335 can cause different symptoms depending on how serious it is and the specific type of car model. Some of the common symptom:

  • Unsuccessful start/start-up failure is often associated with a hard-start/no-start condition.
  • You could face troubles or stalls in the process.
  • The control lost is so severe that it may even end up in the power rate reduction or a total power loss.
  • The reduced fuel economy will be one of the major obstacles.
  • Inconsistency or an exhalation.
  • A knocking or sometimes a pinging sound from the engine cylinder.
  • The stop mode or the idle mode together with the lowered engine power and performance.

Crankshat Connector Removed

How to diagnose the P0335 code?

To diagnose the P0335 error code, a mechanic will take a scan tool to get the code and other codes that are associated with the ECU from the scan tool. The mechanic will also want to access the freeze frame data, which is information on how the engine was running when the trouble code was produced. The mechanic will first have a visual check on the CKP sensor A, to say, look for any visible signs of damage, corrosion, or wrong connection. Alongside this, the mechanic will also try out CKP sensor A with a multimeter or an oscilloscope devices in order to check the voltage, resistance and signal waveform. The technician also will inspect the crankshaft and the flywheel for any damage or misplacement. In addition, the mechanic will check for the timing belt or chain belt for any signs of wear and slipping. The mechanic will then clean the code and subsequently take a test drive to monitor if the code pops up.

How to fix the P0335 code?

The P0335 code can be fixed by repairing or replacing the faulty components in the CKP sensor A circuit. Depending on the cause of the problem, the mechanic may need to:

  • Replace the CKP sensor A
  • Clean or replace the CKP sensor A connector
  • Repair or replace the CKP sensor A wiring
  • Replace the ECU
  • Repair or replace the crankshaft or the flywheel
  • Adjust or replace the timing belt or chain

Crankshaft Sensor Malfunction


How much is the estimated cost of fixing the P0335 code problem?

  • The P0335 code has varying repair costs, and all depend on the damage’s causes and extent. The CKP sensor A needs an average replacement fee between $100 and $200, and the ECU replacement costs are between $500 and $1000. The million-dollar question remains: How much will it cost to repair the wiring, the crankshaft or the timing belt? It all depends on the model of the car and the rate per hour.

Can I drive while the P0335 code is on?

  • You should not drive with that error code as it can seriously cause engine damage. The car may finally fail to start, stall or run poorly, after which the safety and reliability of the vehicle may be jeopardized. To fix the problems, you should take the car to the mechanic immediately.

What is the difference between CKP sensor A and CKP sensor B?

  • CKP sensor A and CKP sensor B are two sensors that are alike in the fact that both of them identify CKP which stands for crankshaft speed and position. The CKP sensor A which is the primary sensor with the prime signal to the ECU is the source. The CKP sensor B is the secondary one, serving the role of the complementary, reference or backup signal, instead of the original power. The two attainable positions for CKP sensors A and B may vary in terms of shape, type, and connector Such might depend on the subunit which we are going to be looking at.

How to prevent the P0335 error?

  • Timely maintenance of the CKP sensor A and the electric circuit functional as the P0335 code trigger will help to avoid the problem. The checking of the crankshaft position sensor must be made; and this should include the cables and also the connections. This means, among the other things, balancing the crankshaft, the flywheel and the timing belt (chain), with the manufacturer’s guidance.

Which codes are in relation with the P0335 code?

  • There are also other codes associated to the P0335 Code like:
    1. P0336: A Sensor Circuits of the Crankshaft Range/performance
    2. P0337: CC: Crankshaft Position Sensor A Circuit, Low Input.
    3. P0338: CPS circuit High input is crankshaft position sensor.
    4. P0339: A cracked Crankshaft Position Sensor Circuit Symptom.
    5. P0340: CPS A circuit instead of coming to normal operation because of short circuit.
    6. P0341: Position Sensor for Camshaft Cam Position Circuit Scopes/Capabilities

The P0335 code is a critical problem in which operation of the vehicle is affected and driving appearance is compromised. In this case a regulating inspection should take place and the vehicle be repaired accordingly. A number of reasons can lead to the symptom which can be sensor A malfunction, harness, or clean the technician. The code shall be repaired by substituting or renovating the faulty parts which comprise of the CKP sensor circuit.