P061C - OBD Trouble Code

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If your vehicle has the OBD error code P061C stored, don’t worry. It simply means that the Powertrain Control Module or the PCM has detected an error with the engine Revolution Per Minute i.e. RPM monitoring system. There may be other controllers that also detect this internal PCM performance error and store the error code. Various controller self-testing work and overall internal control module accountability is monitored by the internal control module of the vehicle. The PCM and other controllers constantly monitor the engine RPM calculation system input and output signals. This RPM monitoring system also interacts with the transmission control module (TCM), traction control module (TCSM), and other controllers as per need

The engine RPM is monitored by its input signals from the crankshaft position (CKP) sensor and the camshaft position (CMP) sensor/s. It is closely monitored. This monitoring is the job of PCM and other controllers, the preferred RPM is entered into the PCM and other controllers. The true RPM is calculated via the input data received from the CMP and CKP, Throttle Position Sensor, and other engine and transmission sensors. Now that it has been calculated, it is compared to the desired RPM. When the ignition is on, the PCM gets energised and the self-tests of internal engine RPM commence. To ensure that all controllers are also working correctly, the controller area network also compared signals from every module. Both the RPM and this test are performed simultaneously, and if the PCM detects any internal error it sets the code. For this the actual RPM has to exceed the maximum threshold limit. The malfunction indicator lamp may also light up depending on how severe the issue is.

What causes this problem with the Internal Control Module Engine RPM Performance?

• Malfunctioning Crankshaft Position Sensor (CKP)
• Open or Shorted CKP harness
• Poor electrical connection at the CKP circuit
• Improper Camshaft Position Sensor (CMP)
• Open or shorted CMP harness
• Poor electrical connection of the CMP circuit
• Malfunctioning Powertrain Control Module (PCM)

1. Crankshaft Position Sensor - Repair or replace it as per need, buy online on Parts Avatar.
2. Crankshaft Position Sensor Connector - Repair it or buy a new one.
3. Crankshaft Position Sensor Harness - Depending upon the damage you may be able to repair the harness, if that’s not solving the issue, opt for replacement.
4. Camshaft Position Sensor - Get the best quality car parts from us, simply order online. Avail free shipping on orders over CAD $99.
5. Camshaft Position Sensor Connector - These connectors suffer plenty wear and tear. Repair or replace as needed.
6. Camshaft Position Sensor Harness - Check if repairs can fix the issue, otherwise replace the harness.
7. Throttle Position Sensor - Repair if possible, other replace stress free from Parts Avatar.
8. Powertrain Control Module - Replacing can be a big expense, and it’s important that you replace from the best only. We have a wide range of products to your vehicle's compatibility.
9. Diagnostic Scanner - A useful car diagnostic tool, ensure it’s working correctly otherwise replace it.
10. Multimeter - Repair or replace as per need.
11. Oscilloscope - Important for diagnosing comp

We at Parts Avatar Canada care for our customers, and that’s why we will help you to diagnose P061C code by listing out some major symptoms. They are mentioned below as follows

Common Symptoms

• Delay or stumble upon acceleration
• Unresponsive acceleration found
• Reduced fuel efficiency
• MAF or throttle actuator codes also present
• Check Engine Light is On

Correcting this error can be tricky here are few simple ways to do that.

• Repair or replace Crankshaft Position Sensor
• Repair or replace Throttle Position Sensor
• Fix or buy a new Diagnostic scanner

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It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P061C code to be stored:

• The OBD error P061C can be quite a challenge to resolve for the most qualified technician. It’s important to hence, have all the needed knowledge to proceed in diagnosing this error code. There can also be a reprogramming issue, and hence the correct equipment is mandatory to assist in resolving this issue.
• These are the tools you will require; oscilloscope, diagnostic scanner, a digital volt/ohmmeter (DVOM), and a source of reliable vehicle information will be required. You vehicles Technical Service Bulletins matching the exact vehicle model and make year, and the error code will also be needed.
• If you have found that there are ECM/PCM power supply related codes present, you will have to sort them out first. Also, any CKP/CMP sensor or TPS (throttle position sensor) codes will need to be diagnosed and repaired accordingly. For this it’s best to follow the directions from the manufacturer. The oscilloscope will come handy to test electromagnetic sensors, and replace any failed components if needed.
• In order to conclude any individual controller as defective or malfunctioning there are some preliminary tests that will have to be conducted. For this, start off by connecting your diagnostic scanner to the vehicles diagnostic port and retrieve all the codes that have been set in it. Freeze frame the data and also make note of them, this will help to understand if the code is intermittent of not. Now simply clear the codes and go on a test-drive. Wait till either one happens; the PCM enters readiness mode or the code is reset. In case the former happens, it's most like an intermittent issue, and will require the problem to worsen before the proper diagnosis can be made. However, if the latter occurs you will have to continue the diagnosis to conclude where the true problem lies.
• Take out your vehicle information source and look in the TSB for the symptoms your car is exhibiting. If you’re able to find the right TSB, it will provide you with the diagnostic information which will be super helpful.
• Using the DVOM test the controller power supply fuses as well as replays. Replace any blown fuses you have found as needed. Make sure you test the fuses with the circuit loaded. If all the fuses and relays seem to be looking good, you will have to perform visual inspections.
• The controller related wiring and harnesses will be your first point of visual inspection. Check the chassis and engine ground junctions too. To know the ground locations for all the related circuits, simply refer the vehicle information source. The DVOM should be used to test the ground integrity.
• Now continue your visual inspection of the system controllers, and look for any damage caused due to water, heat or collision. Controllers that have been damaged particularly by water will have to be considered defective and replaced with new ones.
• If you find that the power and ground circuits are all intact, it’s fair to suspect a defective controller or an error in controller programming. Replacement of the controller required reprogramming by a professional.

Common Mistakes When Diagnosing the P061C Code

• Failed Powertrain Control Module (PCM)
• Wiring problems