How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask eauto Your Own Question
eauto
eauto, The Car Guy
Category: VW
Satisfied Customers: 16289
Experience:  ase certified tech
6149662
Type Your VW Question Here...
eauto is online now
A new question is answered every 9 seconds

I have a 2002 Jetta TDI. I ran through a large puddle and

Customer Question

Hello. I have a 2002 Jetta TDI. I ran through a large puddle and now have a check engine light on and it will not shift out of first gear.
JA: Does the light stay on, or does it blink?
Customer: stays on
JA: Are you fixing your Jetta yourself? What have you tried so far?
Customer: I'm going to try. I have unplugged the battery. thought maybe computer got wet.
JA: Anything else you want the mechanic to know before I connect you?
Customer: no
Submitted: 5 months ago.
Category: VW
Expert:  eauto replied 5 months ago.

Hi . Thank you for asking your question on JustAnswer.
have yiu scanned for codes?

Customer: replied 5 months ago.
Not yet
Expert:  eauto replied 5 months ago.

do you have access to a scan tool?

Customer: replied 5 months ago.
Have one on the way. My son borrowed mine.
Expert:  eauto replied 5 months ago.

let me know the codes as soon as you know

Customer: replied 5 months ago.
P0722
Expert:  eauto replied 5 months ago.

the output speed sensor is likley wet or shorted out thats where i would start

PO 722 is the
SAE VAG Description
P0722 17106 Output Speed Sensor Circuit No Signal
Here is the procedure for checking there is more to it then just replacing the sensor. If you accept please hit the green payment tab. Thanks
Vehicle Speed Sensor (VSS), Checking

Recommended special tools and equipment
V.A.G 1526 multimeter or V.A.G 1715 multimeter
V.A.G 1594 connector test kit
Wiring diagram
Requirements
Respective fuses must be OK.
Selector lever must be in -P- position.
All electrical consumers such as, lights and rear window defroster must be switched off.
Parking brake must be engaged.
Ground (GND) connections to transmission must be OK.
Ignition switched off.
Work sequence

Disconnect 3-pin harness connector to Vehicle Speed Sensor (VSS) -G68- (arrow). Observe safety precautions.
Check harness connector for contact corrosion and ingress of water.
If harness connector is not OK.
Repair the malfunction.
Erase DTC memory of Transmission Control Module (TCM), Diagnostic mode 4: Reset/erase diagnostic data. See: Scan Tool Testing and Procedures\With Generic Scan Tool\Diagnostic Mode 4: Reset/Erase Diagnostic Data
Generate readiness code. See: Monitors, Trips, Drive Cycles and Readiness Codes.
If harness connector is OK.
Measure resistance at 3-pin connector of Vehicle Speed Sensor (VSS) -G68-.
Checking sensor resistance

Measure sensor resistance between terminals 1 + 2 at connector to sensor.
Specified value: 800 to 900 Ohms
Check sensor for short circuit between terminals 2 + 3 and 1 + 3.
Specified value: Infinite Ohms

If specified values are not obtained:
Replace Vehicle Speed Sensor (VSS) -G68-.
Erase DTC memory of Engine Control Module (ECM), Diagnostic mode 4: Reset/erase diagnostic data. See: Scan Tool Testing and Procedures\With Generic Scan Tool\Diagnostic Mode 4: Reset/Erase Diagnostic Data
Generate readiness code. See: Monitors, Trips, Drive Cycles and Readiness Codes.
If no malfunction is found on sensor:
Check wires to Transmission Control Module (TCM) according to wiring diagram.
Checking wires to Transmission Control Module (TCM)
Connect test box to control module wiring harness, connect test box for wiring test.

Check wires between test box and 3-pin connector to Transmission Control Module (TCM) for open circuit according to wiring diagram.
Terminal 1 + socket 65
Terminal 2 + socket 20
Terminal 3 + socket 43

Wire resistance: max. 1.5 Ohms
Check wires for short circuit to each other, to vehicle Ground (GND) and to B+.
Specified value: Infinite Ohms

If no malfunctions are found in wires:
Replace Transmission Control Module (TCM) -J217-.

Customer: replied 5 months ago.
Got it. It was very wet. Put blow dryer on it for 5 minutes. Seems to be shifting fine now.
Expert:  eauto replied 5 months ago.

cool