Fault code P2615 – camshaft position signal output circuit low

Fault code P2615 is called “Camshaft Position (CMP) Signal Output Circuit Low” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II.

Technical description and explained code P2615

Error code P2615 is a generic error code defined as “camshaft position output circuit low”. It is set when the PCM detects that there is a problem with the camshaft position sensor signal output circuit.

Fault code P2615 – camshaft position signal output circuit low

The code is triggered when the Powertrain Control Module (PCM) detects a mismatching voltage in the camshaft position signal output circuit. The camshaft position signal helps the PCM determine ignition timing as well as fuel delivery.

Depending on engine speed (RPM) and load, the engine control unit (ECU) controls the amount of fuel injection and ignition timing. And in variable valve timing (VVT) engines, inlet and exhaust valve timing are adjusted.

The crankshaft position (CKP) and camshaft position (CMP) sensors are the main ones that the PCM module uses to adjust the phasing. If the engine with VVT has two units, there will be two camshaft position sensors.

The camshaft position sensor responds to a gear on the camshaft, which gives the PCM constant information about its speed and position. If the PCM cannot detect a normal CMP signal, it will set fault code P2615.

If a circuit failure occurs and the PCM cannot detect the actual camshaft deviation from the base setting. This has a serious adverse effect on engine efficiency, fuel economy, and exhaust emissions.

Symptoms of vehicle malfunctions

The main signal that an error P2615 has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.

It can also be warning signs such as:

  1. The “Check engine” control lamp on the control panel will light up (the code will be written in the memory as a malfunction).
  2. The engine may run, but with reduced performance (loss of power).
  3. The engine may crank, but not start.
  4. The vehicle may stall or start poorly.
  5. Jerking/missing ignition at idle or under load.
  6. Increased fuel consumption.

Depending on the symptoms, code P2615 can be moderate or very serious. If the error is caused by a faulty timing drive, the result may be internal engine damage.

Factors that can cause this error code

The error code P2615 can mean that one or more of the following problems have occurred:

  • Faulty CMP camshaft position sensor.
  • Open or short circuit of position sensor wires.
  • Damaged CMP sensor connector.
  • Fuse blown in system.
  • Missing teeth or sheared keyway in the ring gear mount.
  • Sometimes faulty PCM module is the cause.

How to fix or reset OBD-2 code P2615

Some suggested steps for troubleshooting and fix the error code P2615:

  1. Connect an OBD-II scanner to the vehicle’s diagnostic connector and read all stored data and error codes.
  2. Clear the errors from the computer memory and test-drive the vehicle to see if code P2615 appears again.
  3. Inspect the electrical wires and connectors, and repair faulty ones if necessary.
  4. Check the operation of the camshaft position sensor using a scanner.
  5. If no problems are found, check the PCM module.

Diagnose and repair of problems

First it is necessary to read all stored data and error codes with an OBD-II scanner. In order to determine when and under what circumstances this error occurred.

Then it is necessary to clear the error codes from the PCM memory and test-drive the vehicle. This will help find out if the P2615 code appears again and if the error is intermittent.

After that, you need to check the oil level and condition, the correct pressure plays a key role in the functioning of this circuit. Then you need to locate all the components of the electrical circuit and perform a thorough visual inspection.

Check the wiring for obvious defects such as scuffs, scuffs, bare wires, or melted areas. Next, check the connectors for safety, corrosion, and damaged contacts.

Testing the wiring

If the code persists, prepare to perform resistance tests on all associated wiring. Be sure to disconnect the sensor and its wiring from the PCM to avoid damaging the controller during the resistance test.

Compare all readings to the values in the manual and repair or replace if necessary. In addition to the wiring, check the camshaft position sensor itself.

Clear all codes after repairs are completed and test drive before re-scanning the system to see if the fault returns.

If code P2615 does not return, the repair can be considered successful. However, if the code does return, you may have a faulty PCM, or an intermittent fault that was not corrected during diagnosis.

On which vehicles does this problem occur most frequently

Fault code P2615 can occur on different vehicles but there are statistics on which brands this occurs most often. Here is a list of some of them:

  • Mercedes-Benz
  • Renault (Fluence, Megane)

Fault code P2615 can sometimes be found with other errors. The most common are the following: P2614, P2616, P2617, P2618, P2619.


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