What does code P1729 mean?

Q: What does code P1729 mean?

Starter Interlock Circuit Short To B+. P1729 on Volkswagen vehicles indicates that the starter interlock circuit has a short to battery positive voltage (B+). The engine control module (ECM) monitors this circuit, which typically involves the clutch pedal position switch on manual cars or the park/neutral switch on automatics, and it has detected voltage where none should be present when the circuit is supposed to be at ground or open.

DTC codes / Volkswagen codes / P1729

P1729 · VolkswagenStarter Interlock Circuit Short To B+

P1729 on Volkswagen vehicles indicates that the starter interlock circuit has a short to battery positive voltage (B+). The engine control module (ECM) monitors this circuit, which typically involves the clutch pedal position switch on manual cars or the park/neutral switch on automatics, and it has detected voltage where none should be present when the circuit is supposed to be at ground or open.

SystemPowertrain

Code typeVolkswagen specific

SeverityHigh

Fix difficultyProfessional

AreaTransmission

Guidance is general and written for Volkswagen vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.