Common questions

How do I fix code p1633?

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How do I fix code p1633?

Check for a repeat of the error code by reconnecting the PCM, start the engine (slowly) and reach its operating temperature. Next, run Key On Engine Off Self-Test. Then, retrieve continuous memory DTCs. If the error code is present, then that means you should be replacing the PCM.

What causes low voltage to PCM?

Defective wiring connecting the alternator to the PCM. A faulty B+ battery cable running from the alternator to the battery. A defective battery and/or battery cables. A faulty PCM (rare)

What are the signs of a bad PCM?

7 Common PCM Failure Symptoms

  • Your ‘Check Engine’ Light is On.
  • Your Car Won’t Start or Starts Roughly.
  • Sudden Loss of Gas Mileage.
  • You Failed Your Emissions Test.
  • Your Engine Stutters or Stalls.
  • Erratic or Random Shifting.
  • You’re Receiving a PCM-Related Error Code.
  • What to Do If You Experience PCM Failure Symptoms.

Where is the PCM located?

The PCM is most often located in the engine bay near the fuse box or inside the car near the fuse box. It can often also be located under the front windshield behind some covers. There are a few different locations that the manufacturer can place your vehicle’s PCM, but the most common location is in the engine bay.

How do I know if my Ford PCM is bad?

What Are the Symptoms of a Faulty PCM?

  1. Your “check engine” light is on.
  2. Other warning lights may be on, including traction control and ABS.
  3. You lose fuel economy for no apparent reason.
  4. Your car stutters when starting, requires multiple attempts, or won’t start at all.
  5. Stuttering or stalling during idling.

Where is the PCM located on a 2002 Ford Taurus?

Premium Member. The PCM is located in the firewall, on the passenger’s side of the car, below the black plastic cowl. It’s easy to find, just look for the giant bundle of wires that runs into a black plastic cover on the firewall.

How do you know if your ECU is bad?

Here are the most common symptoms of a bad ECU:

  1. Check Engine Light stays on after resetting.
  2. Car was jump started on reverse polarity.
  3. Engine turning off for no reason.
  4. Water Damage or Fire Damage on the ECU.
  5. Apparent loss of spark.
  6. Apparent loss of injection pulse or fuel pump.
  7. Intermittent starting problems.
  8. Overheating ECU.

Can a bad ECU cause limp mode?

Sometimes a vehicle will enter limp mode when the ECU gets confused, either due to a faulty sensor, a missing sensor signal, or a sensor reading that is out of spec.

What is ECU on Ford Taurus?

Shop Ford Taurus Replacement Electronic Control Unit The electronic control unit (ECU) is a major component of your car’s computer. This device controls one or more of the electrical systems in a car.

How do you reset the computer on a Ford Taurus?

To reset the computer on the car then You have two options. You can pull the battery cable and let it sit for about 30 minutes. If You don’t want to do that then You can pull the fuse and do the same. To get to the fuse box look to the left of the steering wheel look for a small seam or crack along the dash.

How do I know if my ECU is fried?

Here are the most common symptoms of a bad ECU: Check Engine Light stays on after resetting. Car was jump started on reverse polarity. Engine turning off for no reason….Many other symptoms may occur that can drastically lead to an ECU failure such as:

  1. Erratic idle.
  2. Stalling.
  3. Poor running condition.
  4. Excessive fuel usage.

Can you drive a car with a bad ECU?

It isn’t recommended to drive with a faulty ECU, but it is possible to keep driving the vehicle. The longer you run with the deteriorating ECU, the more issues you’re going to run into when it’s time to bring it to the shop.

What can cause the code p1633 on a 2004 Ford Taurus?

Vocational, Technical or Tra… What can cause the code P1633 on a 2004 Ford Taurus. The code shows Keep Alive Power Voltage too low. What can be causing this … read more Vocational, Technical or Tra… I have a 2003 Ford Taurus SES and the engine light came on.

How to fix the Ford code p1633?

You fix the compressor clutch, start the vehicle, feel the cold and then get a Ford code P1633. Well, dude, chances are you’ve got a blown fuse caused by the old compressor clutch coil. Start by checking fuse #122. If it’s blown, replace it. Then clear the Ford code P1633 and restart.

What is the diagnostic code for a 2004 Ford Taurus?

Check engine light is on and code P1633 comes up … read more Working on 04 Ford Taurus, Diagnostic Code P1633. Check Working on 04 Ford Taurus, Diagnostic Code P1633. Check engine light was on. … read more

What does the DTC p1633 mean on a Kam?

This voltage is used by the PCM to maintain the Keep Alive Memory (KAM). The Diagnostic Trouble Code (DTC) indicates that the Keep Alive Power circuit has experienced a power interrupt. Loss of Keep Alive Power to the Powertrain Control Module results in immediate Malfunction Indicator Lamp (MIL) illumination and sets DTC P1633.

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