P1588 Audi fault code . For engine mount sensor can anyone tell me why an engine mount needs a sensor

ECT? engine coolant sensor? or what? cars have ambient sensor too for HVAC, try telling problem first so help can be on same page,(not zero context)

in the service manual
or at audi on line parts page, see the part sold there and the diagram of location.

what country?
the books are by all above and country
tell country and books open to the correct page
or tell VIN that does the same thing
this
2.0 Turbo-FSI

2.0 L I4 FSI
2.0 L I4 TFSI
2.0 L I4 TDI

what engine is there matters learn to use real audio engine names, and then read the manual on that chapter your exact engine./ 12 engines used this GEN 3.
audi has like 100 engine codes
2.0L code can be code 100

the list is over whelming

https://www.proxyparts.com/wiki/engine-codes/make/audi/model/a3/

learn what code it is or learn to post VIN
the vin 8th digit is engine code.
I answered only for ECT, sensor, but not told you.

possible stuck fan relay relay remove relay and test with a meter

p1654 probable cause of fault is engine oil level/temperature sensor which is located in the sump or oil pan.p1588 i cant find info on it sorry

Simple google search shows 1588 is "open circuit" and 0674 is cylinder 4 glow plug inop. One repair should fix both, and may be as simple as a bad glow plug.

NEED HAVE VECHICLE CODE SCANNED FIRST LOOK FOR FAULT CODES MANY THINGS WILL CAUSE NO STARTING,LIKE BAD CRANKSHAFT POSITION SENSOR.FAULTY CAMSHAFT POSITION SENSOR,BAD SPARK PLUGS FOULED OUT BY FLOODING ENGINE DUE TO LEAKING FUEL INJECTORS,BAD ENGINE COOLANT TEMPERATURE SENSOR,BAD MASS AIR FLOW SENSOR.FAULTY ECM. CODE SCAN VECHICLE FIRST.IF NO FAULT CODES CAME UP YOU COULD HAVE FAULT IN FUEL SYSTEM, COULD HAVE STOPPED UP FUEL FILTER,BAD FUEL PUMP RELAY OR FUSE THE FUEL PUMP COULD BE FAULTY. TURN IGNITION SWITCH TO ON POSITION LISTEN FOR FUEL PUMP OPERATION IN FUEL TANK, YOU SHOULD HEAR FUEL PUMP RUN FOR FEW SECONDS THEN TURN OFF.IF NO FUEL PUMP BAD MORE LIKELY BUT CHECK FUSE AND RELAY FIRST BEFORE BUYING NEW FUEL PUMP.DONT BUY NEW PARTS HAVE VECHICLE CODE SCANNED FIRST USING DIAGNOSTIC SCANNER YOU COULD HAVE BAD CONTAMINATED FUEL.

Check your washer fluid reservoir. It will be low on fluid.

FOr 1993 Audi 90 2.8L SFI 6cyl the Coolant Temperature Sensor is located under hood, passenger side, rear engine area, mounted in cylinder head. Im sorry, but haven't some diagram.

Hope this helps (remember to rate this answer).

Hi
If it runs lumpy when you first start it then it will be one of 2 faults, either the air mass sensor also known as the MAF sensor or the EGR "exhaust gas recycler" valve are you getting any engine lights? normally with the EGR you would but no so often with the air mass sensor.

Lastly it could be the 02 or oxygen sensor but check the other 2 first
Regards
Dan

p.s get a daignostic code and I will tell you the exact fault

463A definitely not VAG codes they are from one of the cheap code readers.
Audi A4 Quattro - fault code 463a: engine control unit disabled.
This could be a dirty sensor or bad connection somewhere.
The immobilizer light flashes when you insert the key?
Imobiliser pick up loop in the steering column sounds dodgy, take the cowling off & check its connected ok. Just clipped it back in.

1. VW VAG type 5 digit fault code 19497 = EOBD type P3041 fault code:
Fault location = CAN data bus, instrumentation - implausible Engine Coolant Temperature (ECT) signal
Probable cause = Wiring, matching resistor in Engine Control Module (ECM)

2. VW VAG type 5 digit fault code 18032 = EOBD type P1624 fault code:
Fault location = Malfunction Indicator Lamp (MIL) - request signal active
Probable cause = Trouble code(s) stored in other system(s)

3. VW VAG type 5 digit fault code 01039:
Fault location = Coolant Temperature Sensor (G2)
Probable cause = Open or Short to Plus, Short to Ground - Intermittent

4. VW VAG type 5 digit fault code 01304:
Fault location = Radio
Probable cause = No Communication

5. EOBD type P0761 fault code:
Fault location = Shift Solenoid C
Probable cause = Performance or Stuck OFF