why does my Ram 1500 DT (2019-Present) have low oil pressure?

Ram 1500 DT (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

597 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix low oil pressure in 2019 Ram 1500 DT. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Engine

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems.
•Allow engine to cool before opening the radiator or draining oil.

Symptoms

•Check engine light illuminated
•Oil pressure warning light activated
•Engine noise (ticking or knocking)
•Decreased engine performance
•Oil leaks around the engine area
•Engine stalling or misfiring

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Check the engine oil level and condition using the dipstick.
3
Inspect the oil pressure sending unit for leaks or damage.
4
Verify the oil pump operation by checking oil pressure with a mechanical gauge.
5
Examine oil passages for blockages or obstructions.
6
Inspect the oil filter for clogs or improper installation.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Mechanical oil pressure gauge
•Socket set
•Torque wrench
•Oil filter wrench

Parts Required

•Oil filter
•Engine oil (SAE 5W-20)
•Oil pressure sending unit (if damaged)
•Oil pump (if defective)

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related trouble codes.
2
Check the engine oil level and condition using the dipstick.
3
Inspect the oil pressure sending unit for leaks or damage.
4
Verify the oil pump operation by checking oil pressure with a mechanical gauge.
5
Examine oil passages for blockages or obstructions.
6
Inspect the oil filter for clogs or improper installation.

Solution

1. Preparation

Tools Required: OBD-II scanner, mechanical oil pressure gauge, socket set, torque wrench, oil filter wrench, replacement oil and oil filter.
Ensure the vehicle is on a level surface and the engine is cool.
Disconnect the battery before starting the work.

2. Check Oil Level and Condition

Remove the dipstick and wipe it clean.
Reinsert the dipstick and remove it again to check the oil level.
If the oil is low, add the appropriate type of oil as per manufacturer specifications (SAE 5W-20 recommended for most 2019 Ram 1500 models).

3. Inspect Oil Pressure Sending Unit

Locate the oil pressure sending unit on the engine.
Disconnect the electrical connector and remove the sending unit using a socket.
Inspect for oil leaks; replace if damaged.

4. Verify Oil Pump Operation

Locate the oil pressure sending unit port and install a mechanical oil pressure gauge.
Start the engine and observe the pressure reading; it should be within the manufacturer’s specified range (typically 25-65 PSI at idle).
If pressure is low, proceed to the next step.

5. Check for Blockages

Inspect the oil filter for debris or clogs; replace if necessary.
Remove the oil pan if blockages in oil passages are suspected.
Clean any obstructions found in the oil pump pickup screen and oil passages.

6. Replace Oil Pump (if necessary)

If the oil pump is malfunctioning, drain the engine oil and remove the oil pan.
Unbolt and remove the oil pump from the engine.
Install the new oil pump, ensuring proper alignment and torque specifications (usually around 15-20 ft-lbs).
Reassemble the oil pan and refill with new oil.