P067D OBD Error Code: Problem & Solutions

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Trouble code P067D can be defined as Cylinder 5 Glow Plug Control Circuit High. The Glow Plug is utilized on diesel engines to preheat the cylinder before the engine is started. Now if the engine control module would detect the glow plug for cylinder five is not functioning properly, then the P067D would start appearing.

Want to learn something more about this fault code?

If the error code P067D is appearing, then it would mean that the powertrain control module (PCM) has detected a discrepancy in the glow plug control circuit for cylinder #5. You can always consult a source of reliable vehicle information to determine the location of the #5 cylinder for your year / make / model / powertrain configuration.

High compression is used by diesel engines instead of spark to initiate piston movement. Since there is no spark involved, cylinder temperature must be increased to maximize compression. Glow plugs are used in each cylinder to accomplish this increase.

What causes this problem with the Cylinder 5 Glow Plug Control Circuit High?

• There can be opened or shorted glow plug control circuit
• The glow plug connector might be loose or faulty
• Quirks in the glow plug timer
• Some faults in the glow plug

1. Powertrain Control Module - There can be some issues with the Powertrain Control Module due to which you may see P067D code appearing over and over again. Visit us to buy best quality PCM online.
2. Body Control Module Component - A lot of issues can arise do to defective Body Control Module Component. Did you just see P067D code flashing? Now you know the reason why it is appearing. Get it inspected and replaced on time.
3. Electronic Control Unit - Faulty Electronic Control Unit can be the reason why P067D code is flashing. Visit us to purchase top notch Electronic Control Unit online.
4. Engine Wiring Harness - It is an important auto part which needs full care. A faulty Engine Wiring Harness can be a reason behind the flashing up of P067D code.
5. Glow Plug Connector - OBD Code P067D can appear because of faulty Glow Plug Connector.
6. Engine Control Module - There can be some issues with the Engine Control Module due to which you may see P067D code appearing over and over again. Visit us to buy best quality Engine Control Module online.

You might be thinking that how would you diagnose these problems? We at Parts Avatar Canada would help you diagnose the major symptoms easily.

Common Symptoms

• Engine start up can start delaying
• Reduction in the overall fuel efficiency
• Intemperate black smoke from exhaust
• Some issues related to engine drivability
• Engine misfire codes may be stored

Looking out for some ways with the help of which you can correct this fault code? Then you have arrived at the correct place. We are here to help you out, so you must check out the steps mentioned below as follows:

• Replace the quirky glow plug
• Make sure to repair or replace the opened or shorted glow plug control circuit
• It is essential to replace the glow plug connector
• The faulty glow plug timer should be restored

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Here are some steps which you should follow in order to diagnose this fault code:

• It is very important to use the correct tools to diagnose a problem with a very professional outlook
• A diagnostic scanner, a reliable source of vehicle information, and a digital volt/ohmmeter (DVOM) will be required in order to arrive at an accurate diagnosis of a code P067D. Use the vehicle information source to search for applicable technical service bulletins (TSB). If you locate a TSB that matches the vehicle make and model, symptoms exhibited, and the code stored, it will help you to arrive at a diagnosis
• You may also need to obtain diagnostic flow charts, wiring diagrams, connector face views, connector pinout charts, component locations, and component testing procedures/specifications from the vehicle information source
• All this information will be needed to correctly diagnose the stored code P067D. Now once you have performed a careful visual inspection of all glow plug and glow plug control wiring and connectors, connect the diagnostic scanner to the vehicle diagnostic port. Then retrieve all stored codes and freeze frame data and record it for later
• After that test drive the vehicle to see if the code P067D is reset. Drive until one of two things happens: Either the PCM enters readiness mode or the code is reset
• If the code is reset, continue with the diagnosis. If it is not, you are dealing with an intermittent condition which may have to worsen before an accurate diagnosis may be achieved. Here is a tip that the service manual will not give you
• The best way to test glow plugs is to remove them and apply battery voltage. If the glow plug glows bright red, it is good. If the glow fails to heat up, and you want to take time to test it with your DVOM, you will likely discover that it does not meet manufacturer's specifications for resistance
• Be careful not to burn yourself or start a fire when performing this test. If the glow plugs appear to be working properly, use the scanner to activate the glow plug timer and test for battery voltage and a ground at the glow plug connector. If no voltage is present, test the power supply for the glow plug timer or glow plug controller
• Test all related fuses and relays as recommended by the manufacturer. As a rule, it best to test system fuses and fusible links with the circuit loaded
• The fuse for a circuit which is not loaded may appear to be functional (when it is not) and lead you down the wrong diagnostic path. If all fuses and relays appear functional, use the DVOM to test output voltage at the glow plug timer or PCM (wherever it originates)

Common Mistakes When Diagnosing The P067D Code

• Failure in the glow plug control module
• Glow plug might be defective
• Flaws in the glow plug wiring harness
• People think that a P067D cannot be caused by a defective glow plug because this is a control circuit code. Don't be deceived; a bad glow plug may cause a variation in the control circuit that result in just such a code
• Huge mistake of attempting to diagnose the wrong cylinder is made by a lot of people. Save yourself a big headache and make sure that you are addressing the correct cylinder before beginning your diagnosis