Q: Code p1633

asked by on

Battery light on during idling, acceleration cut off once mil light is on,, changed ecu with known good ones no success
My car has an automatic transmission.

This may be cased by a number of things, however the code p1633 indicates the engine control unit (ECU) may be faulty. The battery light generally suggests that you may have a charging system issue which is usually caused by a weak battery, a faulty alternator or a bad voltage regulator. If you’d like, a certified YourMechanic technician can come to your location to perform a Battery Light is on Inspection on your vehicle in order to diagnose this issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Battery light flashing, car cannot be started

Hello there. In most cases similar to this, the alternator and battery will fix the issues you have described. In more rare cases, there may be other things that cause the same symptoms. They are the battery cables, alternator fuse,...

Q: Loss of power esp on hills

This may be a sign of a clogged catalytic converter. As you may already know, the catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When this is clogged, this...

Q: The car starts but the speedometer and brake lights and most electrical stuff won't turn on but the car runs

Hi there. It is highly likely that you have an accessory switch, relay or fuse that is damaged and causing these components to not work correctly. If you'd like, you can have one of our mobile mechanics come to your...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.