what causes my Toyota Corolla E170 (2013-2019) to have low oil pressure

Toyota Corolla E170 (2013-2019)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

571 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 Toyota Corolla E170 (2013-2019). 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

•Allow the engine to cool before opening the oil pan.
•Use caution when working with hot engine components to prevent burns.

Symptoms

•Check engine light illuminated
•Oil pressure warning light activated
•Engine noise (ticking or knocking sounds)
•Decreased engine performance
•Oil leaks detected under the vehicle
•Increased engine temperature

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related issues.
2
Check the engine oil level and condition using the dipstick.
3
Inspect the oil pump for proper operation and any signs of wear.
4
Examine oil pressure sending unit for faults or leaks.
5
Inspect oil passages and filter for blockages.
6
Verify the integrity of the oil pump pickup tube and screen.

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
•Socket set
•Oil filter wrench
•Torque wrench
•Multimeter

Parts Required

•Engine oil (as specified in the owner's manual)
•Oil filter
•Oil pump (if diagnosed as faulty)
•Oil pressure sending unit (if diagnosed as faulty)

Related Faults

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Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify any related issues.
2
Check the engine oil level and condition using the dipstick.
3
Inspect the oil pump for proper operation and any signs of wear.
4
Examine oil pressure sending unit for faults or leaks.
5
Inspect oil passages and filter for blockages.
6
Verify the integrity of the oil pump pickup tube and screen.

Solution

1. Preparation

Gather all necessary tools and parts.
Ensure the vehicle is parked on a level surface and the engine is cool.
Disconnect the negative battery terminal to prevent electrical issues.

2. Check Oil Level and Condition

Remove the dipstick and wipe it clean.
Reinsert dipstick and remove again to check oil level.
If oil is low, add the appropriate type of oil as specified in the owner’s manual.

3. Replace Oil Filter

Locate the oil filter using a wrench.
Use an oil filter wrench to remove the old oil filter.
Apply a small amount of new oil to the rubber gasket of the new filter.
Install the new oil filter by hand, ensuring it’s snug but not overtightened.

4. Inspect and Replace Oil Pump (if necessary)

Drain the engine oil completely and remove the oil pan.
Unbolt and remove the old oil pump from the engine block.
Install the new oil pump, ensuring all bolts are torqued to manufacturer specifications.
Reinstall the oil pan with a new gasket, torque bolts as specified.

5. Verify Oil Pressure Sending Unit

Disconnect the wiring harness from the oil pressure sending unit.
Remove the unit using a socket wrench.
Test the unit with a multimeter for proper resistance.
Replace the unit if faulty.

6. Refill Engine Oil

Refill the engine with the correct type and amount of oil as specified in the owner’s manual.
Reconnect the negative battery terminal.