Top 8 Symptoms and Causes of a Bad PCM

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  • Опубликовано: 2 окт 2024

Комментарии • 43

  • @melissaklemm9976
    @melissaklemm9976 Год назад +2

    Thanks elimination on my checklist

  • @kevinhollingsworth1410
    @kevinhollingsworth1410 8 месяцев назад +1

    I have a chrysler 300 2006 check engine light came on transmission started acking funny not charging gears getting code p0700 and p0748 got a transmission out of 2006 dogde charger put it in this transmission giving code p7048 and p0700 anyone kno what is problem

  • @saadsheikh28
    @saadsheikh28 Год назад +3

    Very Informative video

  • @wajihwakim
    @wajihwakim 11 месяцев назад +1

    great info thank you, i have vw mk5 R32 having this P0351 code its intermittent misfire with rough idle, changed new coil original vw and all spark plugs changed and connectors. i can see a strong spark out of the coil for cylinder 1. how likely this issue is caused by a faulty ECU and if its the ecu would the coil still fire normally and constantly maybe signal sent wrong from ecu? the only code coming is P0351 would appreciate your feedback

    • @MechanicalBoost
      @MechanicalBoost  11 месяцев назад

      A P0351 trouble code is specific to the ignition coil "A" primary/secondary circuit, and it typically indicates a problem with the ignition system for cylinder 1. An Engine Control Unit (ECU) issue can indirectly cause a P0351 code, as the ECU plays a crucial role in controlling the ignition system. The ECU is responsible for controlling the ignition timing for each cylinder. If the ECU malfunctions and doesn't send the correct signals to the ignition coil for cylinder 1, it can cause misfires or erratic spark timing, leading to the P0351 code.

  • @panchoflores6590
    @panchoflores6590 9 месяцев назад

    My 05 tundra has like 4 faults some say 02 sensors replaced but still comes back after 20 mnt drive one of them says module. Can it be comp.?

  • @MarcellusMerlin
    @MarcellusMerlin 29 дней назад

    Brown Laura Lee Sharon Moore Laura

    • @MechanicalBoost
      @MechanicalBoost  29 дней назад

      If you have any issue, kindly comment in english only so that everyone here can understand easily.

  • @xxaquzzxx-8880
    @xxaquzzxx-8880 Месяц назад

    Hey I think this is wrong with my 2013 dodge dart, it starts fine. But when I am randomly going down the road it starts jerking back and forth. I noticed I get bad fuel economy as well. I have a code reader and it’s says pcm/ecu is not registering data correctly. I am positive this is it. Thanks

    • @MechanicalBoost
      @MechanicalBoost  Месяц назад

      Thanks for sharing your feedback.. If your PCM/ECM is faulty, you should replace it as soon as possible to prevent severe engine damage.

  • @joegamer1696
    @joegamer1696 2 месяца назад

    My 2008 mazda mx5 blows 15A engine fuse when i turn on the ignition switch and scanner says error code u0100 that is for lost communication with pcm and don't know if its a pcm problem cause sometimes the car was running fine then the performance drops and have to rev up but at around 4k rpms the car just dies randomly and the fuse keeps blowing and nobody wants to work on so i'm here 😢

    • @MechanicalBoost
      @MechanicalBoost  2 месяца назад +1

      The issues with your 2008 Mazda MX-5 blowing the 15A engine fuse and showing a U0100 error code, indicating lost communication with the Powertrain Control Module (PCM), can be challenging to diagnose.
      1) A short circuit or ground issue in the wiring harness connected to the PCM can cause the fuse to blow.
      2) A malfunctioning PCM can cause intermittent communication issues and might lead to the fuse blowing.
      3) A shorted sensor or actuator connected to the PCM
      4) Poor ground connections can lead to intermittent communication issues.
      Ensure all ground connections are secure and free of corrosion.
      If the problem persists after these steps, it might be necessary to seek professional help from a mechanic or automotive electrician, as they have the tools and experience to diagnose and fix complex electrical issues.

  • @Gmackk
    @Gmackk 9 месяцев назад

    I’ve got an 06 Chrysler 300c. It’s the hemi. Getting code p0300. Wouldn’t idle when I first got it just kept stalling. It’s got no cats on it. I changed the spark plugs and coil packs an it started up an ran fine! I got cats for it an I was only able to get passenger side cat on. Gonna have to have a shop do the driver side but now the p0300 code is back and the car will idle but when u put it in gear it stalls out. Didn’t have this issue until I put passenger cat on? Need some suggestions! Gonna change out the fuel injectors next but what would be your advice?

    • @MechanicalBoost
      @MechanicalBoost  8 месяцев назад

      I recommend to inspect your fuel injectors as well as ignition coils. P0300 code is usually triggered due to a misfire and a faulty ignition coil or fuel injector may also lead to misfire..

  • @amandapegg9113
    @amandapegg9113 11 месяцев назад

    I have taken my Kia Rio to 4 different shops and they can’t figure out what is wrong. It turns and acts like it’ll start, but won’t. I have changed the gas tank, spark plugs, new battery, camshaft, and crankshaft. The last mechanic said it has to be the ecm but wasn’t sure. He said he didn’t have the time to go to junk yard and the other 3 shops told me to just buy another car. I can’t cause I ended up hurting my back and doctor won’t release me to work so I can’t get another car being a single mom. Any ideas? The problem before this was when I put gas into car would die and take several times to start. Also was running code p0343, p0650, p0016, p0172, & p0456. I fixed all but the p0172,p0456 & p0650. After clearing the codes I only get p0650. I thought about replacing ECU then if that didn’t help change the canister purge valve.

    • @MechanicalBoost
      @MechanicalBoost  11 месяцев назад

      I cant tell you the main issue with your car without its proper inspection. Basically, p0650 is set when the vehicle's Powertrain Control Module detects a fault with the Malfunction Indicator Lamp (MIL) electrical circuit.

  • @twinscrew9.047
    @twinscrew9.047 Год назад +2

    I have replaced coolant sensor 3 times and wiring is perfect and truck stalls then starts and runs rich and check engine light is on with no codes any idea's

    • @MechanicalBoost
      @MechanicalBoost  Год назад +2

      The issues you're experiencing may be due to a faulty fuel system, a problematic mass airflow sensor, or an issue with your truck's powertrain control module (PCM). Each of these can cause a rich fuel condition and stalling, even if the coolant sensor and wiring are functioning properly. However, it's unusual to have a check engine light without any diagnostic trouble codes. It could be a sign of a failing PCM. Remember, this is just a starting point, and a thorough diagnosis by a professional mechanic is recommended.

    • @twinscrew9.047
      @twinscrew9.047 Год назад

      @@MechanicalBoost I finally got codes po118 po117 don't make sense and replaced pcm 2 times

    • @melissaklemm9976
      @melissaklemm9976 Год назад

      @MechanicalBoost maybe a VCT. .if it stalls out of nowhere driving or while slowing down mainly? Although as long as the gas in pressed you don't stall. But as soon as you go to slow down..do you hear chugging? Or like something is clogged sounding

    • @melissaklemm9976
      @melissaklemm9976 Год назад

      VCT

    • @melissaklemm9976
      @melissaklemm9976 Год назад

      VCT

  • @StayPositive-sd8op
    @StayPositive-sd8op Месяц назад

    That's interesting. I only have one of those in the list so mine must be working OK. Thanks for sharing

  • @WarofWolvess
    @WarofWolvess 11 месяцев назад

    I’ve got a 99’ Ford mustang Gt. I’ve replaced fuel pump. Fuel filter. Injectors. Alternator. Fuses. Still will not start. Cranks and tries to start but it can’t. Fuel pump is working too. Says no communication to the pcm. I’ve done everything else. Will buying and installing a pcm make it run?

    • @MechanicalBoost
      @MechanicalBoost  11 месяцев назад

      Before buying new PCM, you should test your old PCM using a best suitable scan tool. And also check the software of your PCM because in some cases, PCM start to create issues because its software needs to be update

  • @AJDBroski
    @AJDBroski 10 месяцев назад

    I had a '05 VW Jetta, it stalled while i was driving on the street. Code P2177 popped up, so i changed fuel pump, MAF sensor, clean fuel injectors and replaced spark plugs. My last resort was the PCM was bad, but wasnt sure because the part was $600. But hearing the beginning of the video you said it also plays a part in the AC (which also was another problem). I changed the AC compressor, AC relay, ac radiator fan, vacuumed and charged it. So do you think it was the PCM the whole time?

    • @MechanicalBoost
      @MechanicalBoost  9 месяцев назад

      Yeah, it is possible that your PCM is faulty because a faulty PCM may also trigger a false code. It is recommended to consult a professional mechanic.

  • @jasonb1159
    @jasonb1159 Год назад

    Got an 05 duramax that's been acting like it has a short and finally pulled a p0601 code

    • @MechanicalBoost
      @MechanicalBoost  Год назад

      Yes, a bad PCM (Powertrain Control Module) can indeed cause a P0601 diagnostic trouble code (DTC) to be triggered in a vehicle's onboard computer system. The P0601 code is specifically associated with a malfunction in the PCM's internal memory or its programming.

  • @charlieallisoni7270
    @charlieallisoni7270 5 месяцев назад

    Where is the pcm located in a 2012 ford F150

    • @MechanicalBoost
      @MechanicalBoost  5 месяцев назад

      In a 2012 Ford F-150, the Powertrain Control Module (PCM) is typically located under the hood, near the engine compartment. It is often positioned on the firewall, on the passenger side of the vehicle. However, it's always a good idea to consult the vehicle's manual or a repair guide for the exact location, as it can vary slightly depending on the specific model and configuration of the truck.

  • @Darin-j3w
    @Darin-j3w Месяц назад

    But where is it located?

    • @MechanicalBoost
      @MechanicalBoost  Месяц назад

      The PCM in a car can be located in different places depending on the make and model. The most common location is the engine bay, but in some models, it may be covered and located near the windshield. It is recommended to check your car manual to find the exact location of your PCM.