Skip the auto shop - Our mechanics make house calls

Q: ABS, ESP, Check engine 2005 Audi A4 1.8T

asked by on

For the past month, I have had issues with my 05 Audi A4 1.8 base (VIN: WAUJC68E65A101749).

My issues started with the ABS and ESP light coming on and the speedometer wouldn't move. This would happen intermittently but would for sure happen if you remained idle at a drive through.

We replaced all 4 speed sensor with aftermarket parts. Everything went off for about 4 runs and now the problem has come back. ABS, ESP and check engine light all on now.

Could this mean an ABS module issue?

My car has 135000 miles.
My car has an automatic transmission.

Prior to condemning the ABS module, there are quite a few tests that must be performed to rule out more common causes. In particular, you always want to rule out what is indeed the most common cause of an ABS system fault which is simply a loose, disconnected, or high resistance wire in a circuit. If you request an ABS system diagnostic the responding certified mechanic will perform the required diagnostic and get this taken care of for you.


With regard to the check engine light, any one, or more, out of a list of thousands of Diagnostic Trouble Codes could have caused your vehicle’s Check Engine Light to illuminate. Your best option is to request a check engine light diagnostic. During such a diagnostic, a certified mechanic from YourMechanic would use a code scanner to retrieve the specific diagnostic trouble code(s) from your car’s PCM that have caused the check engine light to illuminate. Using those codes, the appropriate individual vehicle components or sub-systems (often a sensor, circuit, and the like) are tested to pinpoint the cause of the fault or the reason why the check engine light has illuminated. Once the faulty part or component is identified, it is explained to your satisfaction and the mechanic will let you know of the cost to repair. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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: Yellow triangle and yellow brake light illuminating on dashboard

Hi, thanks for writing in. I recommend checking the brake fluid level and the brake fluid level sensor. These are more "logical", given recent service. Replacing the ABS is an expensive proposition. I would get an ABS reader on it...

Q: Clunking noise from front of car when driving slowly or turning slowly

Hi there. Most clunking sounds, especially while turning, are attributed to worn out bearings or bushings - especially CV joints, tie rod ends, and also stabilizer bar joints. Not sure why it would only happen while it is hot outside,...

Q: What Could Be The Problem? My car has no heat.

This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater core is a small radiator like unit that circulates the hot coolant from the engine through the heater...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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.