Code P1887, D is blinking and Check engine light is on?

MARIA CHIWAULA

MEMBER
2010 VOLKSWAGEN POLO
1.4L
4 CYL
2WD
AUTOMATIC
134,000 MILES

When I turn the engine on or I'm driving, after some time the gear on the dashboard starts blinking, be it D, R, N etc. When I switch the engine off and start the car again it stops, after driving for some time it starts blinking again and on goes the process. When I scanned it, it threw the error code p1887, Vehicle speed signal wheel speed from brake control module: implausible signal and P189c function restriction due to insufficient pressure build up. What could be wrong? Maria from Malawi

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,909 POSTS

Hello Maria from Malawi,

I have found conflicting reports on what this code means.

The P1887 code on your 2010 Volkswagen Polo indicates an issue with the Torque Converter Clutch (TCC) Release Switch Circuit.

P189C indicates a problem with the Transmission Control Module (TCM).

and

Error code p1887, Vehicle speed signal wheel speed from brake control module: implausible signal and P189c function restriction due to insufficient pressure build up.

The fact that the "D" light is blinking I would say the transmission is the issue. If the torque converter control solenoid is shorted out, which is common, it might throw the P189c code. Let's remove the solenoid for testing with a voltmeter.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

If when testing, you have an open or shorted connection (Zero OHMS of resistance) then the solenoid is bad.