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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Car squeaks when I turn the wheel.

This is a common issue with the Audi A4 and is often times related to the control arms in the steering. These can tend to rust and become corroded which will cause the squeaking sound you describe. There are pinch...

Q: Does a VW Passat 2003 have a front motor mount?

Hi there. There is no directly front motor mount, but there is a mid mount extended to the rear of the engine and a side mount just under the crank area to the frame. There is also a mount that...

Q: OEM-sized pipe exhaust flow

As long as you use the basic same size, it won't affect anything, but you want to stick to OEM size on that Audi, because the exhaust flow is based on the diameter of the pipe and if you put...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...