U1391 Volkswagen Auto Trouble Code
U1391 Volkswagen Auto Trouble Code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.
Some problems such as misfires and evaporative emission (EVAP) leaks can be very challenging to nail down. Misfires can be caused by ignition problems, fuel problems or compression problems. The underlying cause might be fouled spark plugs, bad plug wires, a weak ignition coil, dirty injectors, a shorted or open injector, low fuel pressure, a vacuum leak, a leaky head gasket, burned exhaust valve or a camshaft with a bad lobe.
U1391 Volkswagen Possible Solution:
Power Steering Pressure (PSP) Switch Signal Malfunction The PCM counts the number of times vehicle speed transitions from 0 to a calibratable speed. After a calibratable number of speed transitions the PCM expects that the PSP input should have changed. This DTC is set if the transition is not detected. Vehicle towed with engine running Power steering hydraulic concern was repaired but DTC was not erased PSP switch/shorting bar damaged SIG RTN circuit open PSP circuit open or shorted to SIGRTN PCM damaged Check, if possible, if vehicle was towed or power steering service was performed. Observe PSP V PID while checking wires for intermittents.
U1391 Volkswagen Description For All Models :
- Volkswagen 1200
- Volkswagen 1300
- Volkswagen 1302
- Volkswagen 1303
- Volkswagen 1500
- Volkswagen 1600
- Volkswagen 181
- Volkswagen 1-litre
- Volkswagen 411
- Volkswagen Aac
- Volkswagen Amarok
- Volkswagen Arteon
- Volkswagen Atlas
- Volkswagen Beetle
- Volkswagen Bora
- Volkswagen Brasilia
- Volkswagen Cabriolet
- Volkswagen Caddy
- Volkswagen Caddy 2
- Volkswagen Caddy 3
- Volkswagen Caddy 4
- Volkswagen California
- Volkswagen Caravelle
- Volkswagen Citi
- Volkswagen Commercial
- Volkswagen Concept
- Volkswagen Corrado
- Volkswagen Crafter
- Volkswagen Crafter Ii
- Volkswagen Crossgolf
- Volkswagen Crosspolo
- Volkswagen Crosstouran
- Volkswagen Derby
- Volkswagen Ea
- Volkswagen Ecoracer
- Volkswagen Eos
- Volkswagen Eurovan
- Volkswagen Export
- Volkswagen Fox
- Volkswagen Fusca
- Volkswagen Gli
- Volkswagen Gol
- Volkswagen Gol Ii
- Volkswagen Golf 3
- Volkswagen Golf 4
- Volkswagen Golf 5
- Volkswagen Golf 6
- Volkswagen Golf 7
- Volkswagen Golf 1
- Volkswagen Golf 2
- Volkswagen Gti
- Volkswagen Gx3
- Volkswagen Hac
- Volkswagen Iltis
- Volkswagen Jetta
- Volkswagen Jetta A4
- Volkswagen Jetta A5
- Volkswagen Jetta A6
- Volkswagen K70
- Volkswagen Karmann Cheetah
- Volkswagen Karmann Ghia
- Volkswagen Kombi
- Volkswagen Lt
- Volkswagen Lupo
- Volkswagen Magellan
- Volkswagen Microbus
- Volkswagen Multivan
- Volkswagen New Beetle
- Volkswagen Parati
- Volkswagen Passat
- Volkswagen Passat B5
- Volkswagen Passat B6
- Volkswagen Passat B7
- Volkswagen Passat B8
- Volkswagen Phaeton
- Volkswagen Pickup
- Volkswagen Pointer
- Volkswagen Polo
- Volkswagen Polo 4
- Volkswagen Polo 5
- Volkswagen Quantum
- Volkswagen Rabbit
- Volkswagen Santana
- Volkswagen Saveiro
- Volkswagen Schwimmwagen
- Volkswagen Scirocco
- Volkswagen Scooter
- Volkswagen Sedan
- Volkswagen Sharan
- Volkswagen Sharan 2
- Volkswagen Sp2
- Volkswagen T4
- Volkswagen T5
- Volkswagen T6
- Volkswagen Tiguan
- Volkswagen Touareg
- Volkswagen Touran
- Volkswagen Touran I
- Volkswagen Touran Ii
- Volkswagen Touran Iii
- Volkswagen Transporter
- Volkswagen T-roc
- Volkswagen Type 3
- Volkswagen Type 4
- Volkswagen Up
- Volkswagen Vento
- Volkswagen Voyage
- Volkswagen W12
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U1391 Volkswagen Trouble Repair :
When you turn on the ignition, the Service Engine Soon or Check Engine U1391 Volkswagen light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. You'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the car! |
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