P1390 Mitsubishi Code - Timing Belt Skipped 1 Tooth Or More
Quick Answer
The P1390 code for Mitsubishi vehicles indicates that the timing belt has skipped 1 tooth or more. Common causes include Worn timing belt tensioner, Misaligned timing marks during belt replacement, Faulty timing belt. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1390 Mitsubishi indicates Timing Belt Skipped 1 Tooth Or More.
- Common causes
- Common causes include Worn timing belt tensioner, Misaligned timing marks during belt replacement, Faulty timing belt.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1390 Mitsubishi Description
The P1390 code for Mitsubishi vehicles indicates that the timing belt has skipped 1 tooth or more. The timing belt plays a crucial role in synchronizing the camshaft and crankshaft to ensure proper engine operation. When the timing belt skips a tooth or more, it can lead to significant issues with engine performance, including misfires, rough idling, poor acceleration, and potentially engine stalling.
Common Causes of P1390 Mitsubishi
- Worn timing belt tensioner
- Misaligned timing marks during belt replacement
- Faulty timing belt
- Engine overheating causing the timing belt to stretch
- Incorrect installation of the timing belt
Symptoms of P1390 Mitsubishi
- Engine misfires
- Rough idling
- Decreased acceleration
- Engine stalling
- Loud ticking noise coming from the engine
How to Fix P1390 Mitsubishi
- Inspect the timing belt and tensioner for wear and replace if necessary.
- Check and realign the timing marks to ensure proper synchronization of the camshaft and crankshaft.
- Replace the timing belt with a new, high-quality belt.
- Perform a timing belt tension adjustment to ensure proper tension and alignment.
- Clear the diagnostic trouble codes and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P1390 Mitsubishi
The cost of repairing a timing belt that has skipped 1 tooth or more can vary depending on the make and model of the vehicle, as well as the extent of the damage. On average, the repair costs for this issue can range from $300 to $800, including parts and labor. It is recommended to consult with a trusted auto repair shop for a more accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates can vary, so it's advisable to shop around and compare prices before committing to any repairs.
When is the Code Detected?
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Frequently Asked Questions about P1390 Mitsubishi Code
1. What does the OBDII code P1390 mean on a Mitsubishi?
P1390 indicates that the timing belt has skipped one tooth or more, which can cause improper engine timing.
2. What are the symptoms of the P1390 code on a Mitsubishi?
Symptoms may include rough idling, poor acceleration, reduced fuel efficiency, engine misfires, or difficulty starting the engine.
3. What causes the P1390 code in a Mitsubishi?
Common causes include a worn or damaged timing belt, a misaligned timing belt during installation, or a failed timing belt tensioner.
4. Can driving with the P1390 code damage my Mitsubishi’s engine?
Yes, ignoring this issue can lead to severe engine damage, particularly if the timing belt fails completely or the engine timing becomes significantly off.
5. How is the P1390 code diagnosed?
A mechanic will inspect the timing belt for wear or damage, check the alignment of the timing marks, and verify the condition of the timing belt tensioner and related components.
6. How do you fix the P1390 code on a Mitsubishi?
Repairs typically involve replacing the timing belt, adjusting the timing, and possibly replacing the timing belt tensioner or other related components.
7. How often should the timing belt be replaced to avoid the P1390 code?
Refer to your Mitsubishi owner’s manual, but timing belts are generally replaced every 60,000 to 100,000 miles.
8. Can a loose timing belt tensioner cause the P1390 code?
Yes, a loose or faulty timing belt tensioner can lead to the belt skipping teeth and trigger the P1390 code.
9. How much does it cost to fix the P1390 code on a Mitsubishi?
Repair costs vary but typically range from $500 to $1,000, depending on whether additional components like the tensioner or water pump need replacing.
10. Can I reset the P1390 code without fixing the issue?
While you can clear the code, the underlying problem will persist and could lead to engine damage if not addressed.
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