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The engine consists of multiple parts, and the oil pump is one of them. The oil pump is used to properly supply oil throughout the engine. Learn the P06DD code symptoms and causes.
When the oil pump becomes faulty, it doesn’t properly pump oil throughout the engine. It may lead to a reduction in the oil pressure. When the engine control module (ECM) of the vehicle monitors low oil pressure, it triggers the P06DD code. This article explains the P06DD code meaning, symptoms, causes, and how to fix it.
P06DD Code Definition
P06DD code – Engine Oil Pressure Control Circuit Performance/Stuck Off.
What does the P06DD Code Mean?
The diagnostic trouble code P06DD indicates that the engine control module (ECM) of your vehicle monitors that engine oil pressure is above or less than the specified allowable thresholds.
The oil pump is one of the most important parts of the vehicle. Its function is to deliver the oil to the engine. It is one of the most vital components of the engine lubrication system that shouldn’t go bad else a breakdown will occur.
It features two pressure-regulated modes (low-pressure and high-pressure modes), which are controlled by the opening and closing of the solenoid valve.
The high-pressure mode delivers around 65PSI, while the low-pressure mode provides approximately 29PSI.
High oil pressure occurs primarily in the main engine, leading to the expulsion of oil plugs. This phenomenon, attributed to the engine’s design, is characterized by excessively high pressure during cold start-ups.
Conversely, low oil pressure can result in detrimental effects on the engine. This issue may lead to the failure of the engine parts, starting from the cam carrier bearings located at the top of the engine. Basically, the upper parts don’t get enough lubrication, and this sets off a chain of damage.
The ECM of your car regulates the performance of the oil pump between these modes based on factors such as operating conditions, oil temperature, engine load, coolant temperature, and engine rpm.
If the ECM detects that the oil pressure falls below the specified limit, it triggers a P06DD code to inform the driver.
Symptoms of P06DD Code
When the P06DD code is triggered on the vehicle dashboard, your vehicle produces one or more of the below-given symptoms:
- High oil pressure
- Check engine light
- Excessive engine vibration
- Unusual noises from the engine
- Reduced engine power
- Rough idle
- Insufficient oil pressure
- Poor vehicle performance
- The damage of the engine parts
- Engine Overheating
Causes of P06DD Code
The following are the major causes of the P06DD code:
- Insufficient engine oil in the oil reservoir
- A bad solenoid valve
- Contaminated oil
- An issue with the oil pressure
- Clogged oil channels
- Faulty oil pump
- Damaged wiring or lose connections connected to the oil pump
Read More: C1201 Code Symptoms and Causes
How to Diagnose P06DD Code
When the P06DD code is triggered, it is very important to fix it as soon as possible. Follow the following steps to diagnose the P06DD trouble code:
- Read the trouble codes stored in the ECM memory by using an OBD-II scanner. These stored error codes may assist in finding the main issue. After noting the freeze data, clear the ECM memory. If P06DD returns, move forward for more inspection.
- Inspect the oil level in the oil reservoir. You can use the dipstick to check the oil level. The dipstick has two marks; low and full marks. If the oil level is in between the low and full marks, it means your oil reservoir has sufficient oil. If it’s lower than the low mark, it indicates that you need to add more oil.
- Check the oil condition. If it is dirty, flush the dirty oil and add new oil.
- Check the connectors and wires connected to the solenoid valve, oil pressure sensor, and oil pump for damage.
- Visually inspect the solenoid valves for damage.
- Inspect the oil filter. If it is clogged, replace or clean it properly.
- Visually check the oil pressure sensor for damage.
- Check the oil passages for a blockage.
- Check the oil pump for damage or wear and tear.
P06DD Code Diagnosis Mistakes
- Not using a scanner to confirm the code
- Replacing the oil pump without checking the oil level and condition
- Overlooking the oil pressure sensor
- Not inspecting electrical issues
- Not inspecting the oil pump
- Overlooking the solenoid valve
What repairs can fix the P06DD Code
One or more of the repairs can fix the P06DD code:
- Adding more oil if needed
- Repair the damaged wiring or loose connections
- Oil change
- Replace the faulty oil pump
- Replace the bad oil pressure sensor
- Replace the bad solenoid valve
- Clean the blocked oil passages
- Fixing the issues related to ECM
Repair Cost of P06DD Code
To fix the P06DD code, you need to repair or replace one or more of the following parts:
| Parts | Cost |
| Engine oil pump replacement | $290 to $2600 |
| Oil change | $20 to $60 |
| Oil pressure sensor replacement | $70 to $270 |
| Solenoid valve replacement | $60 to $800 |
| Oil Filter replacement | $40 to $90 |
FAQ Section
What is the function of Oil Pump?
The main function of the oil pump is to move oil through the engine to lubricate the engine’s rotating parts. It also builds up pressure in the oil system. This is what keeps the bearings lubricated, enables the use of better fluid bearings, and even helps cool down the engine.
What are the symptoms of P06DD Ford?
When a Ford car triggers the P06DD code, it produces different symptoms such as poor engine performance, poor fuel economy, rough idle, check engine light, or poor oil pressure.
What is the purpose of an oil pressure sensor?
The main function of the oil pressure sensor is to measure the pressure of the oil flowing through the engine and sends this information to the vehicle’s main computer.
How serious is the P06DD Code?
The P06DD trouble code is not considered a serious trouble code. However, it may cause engine damage if you don’t address it for a long time. It may cause poor engine performance and engine overheating.
Can I drive with the P06DD code?
Yes, you can drive with the P06DD code, but it is not recommended to drive for a long distance. Your engine requires a proper supply of oil to work efficiently. However, P06DD indicates an issue with the oil pressure. Insufficient oil pressure may cause complete failure of the engine. Therefore, it is very important to address this issue as soon as possible.
What causes low oil pressure?
The low oil pressure can be caused due to different reasons, including a faulty oil pump, a bad solenoid valve, low oil level, dirty oil, clogged oil passages, clogged oil filter, or an issue with the oil pressure sensor.
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