P1399 Acura Code - Random Cylinder Misfire Detected
Quick Answer
When a misfire occurs, engine speed will fluctuate. Common causes include Valve clearance out of range, Blocked EGR (exhaust gas recirculation) Passages. 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
- P1399 Acura indicates Random Cylinder Misfire Detected.
- Common causes
- Common causes include Valve clearance out of range, Blocked EGR (exhaust gas recirculation) Passages.
- 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.
Code P1399 Acura Description
What are the Possible Causes of the DTC P1399 Acura?
- Valve clearance out of range
- Blocked EGR (exhaust gas recirculation) Passages
How to Fix the DTC P1399 Acura?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1399 Acura code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1399 Acura Code
1. What are the common symptoms of OBDII code P1399 in an Acura related to a random cylinder misfire?
- Common symptoms include rough idling, engine hesitation, loss of power, and potentially an illuminated check engine light.
2. What are the possible causes of a random cylinder misfire detected by OBDII code P1399 in an Acura?
- The causes may include faulty spark plugs, ignition coils, fuel injectors, vacuum leaks, low fuel pressure, or a problem with the engine's compression.
3. How can I diagnose the source of the random cylinder misfire indicated by OBDII code P1399 in my Acura?
- Diagnostic steps may include inspecting and testing spark plugs, ignition coils, fuel injectors, performing a compression test, and checking for vacuum leaks.
4. Can a dirty or clogged fuel injector be a common cause of OBDII code P1399 in an Acura?
- Yes, a dirty or clogged fuel injector can lead to a random cylinder misfire and trigger the P1399 code. Regular maintenance, such as using fuel injector cleaner, may help prevent this issue.
5. Is it safe to continue driving my Acura if the OBDII code P1399 related to a random cylinder misfire is present?
- It is generally not recommended to drive your vehicle with a misfiring cylinder, as it can lead to further damage to the engine and other components. It's best to address the issue promptly.
6. Can a simple spark plug replacement fix the OBDII code P1399 in an Acura?
- In some cases, a misfire related to code P1399 may be resolved by replacing worn or faulty spark plugs. However, it's essential to perform a thorough diagnosis to ensure other components are not contributing to the issue.
7. How crucial is it to address the OBDII code P1399 in an Acura promptly?
- It is important to address the P1399 code promptly to prevent potential damage to the engine, reduce fuel efficiency, and ensure the vehicle runs smoothly.
8. Are there any preventive maintenance tips to avoid OBDII code P1399 in an Acura?
- Regular maintenance, such as replacing spark plugs at recommended intervals, using quality fuel, and addressing any engine performance issues promptly, can help prevent random cylinder misfires and the P1399 code.
9. Can a DIY enthusiast repair the OBDII code P1399 issue in an Acura, or is it best left to a professional mechanic?
- Depending on your skill level and access to tools, some basic repairs related to the P1399 code, such as replacing spark plugs, may be performed by a DIY enthusiast. However, more complex issues may require professional expertise.
10. How can I clear the OBDII code P1399 from my Acura's system after addressing the underlying issue?
- After fixing the problem causing the P1399 code, you can clear it using an OBDII scanner or by disconnecting the car's battery for a few minutes to reset the system.
Discuss the causes and fixes for P1399 Acura OBDII Code
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I have a 2000 Acura 3.2 TL motor got code P 1259, change variable valve timing oil pressure switch, cleared computer, started car now I have a code P 1399 preacher any information
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