What does code P1617 mean?

Q: What does code P1617 mean?

Glow Plug Heater Indicator Circuit Open Short To Ground. P1617 on Volkswagen vehicles means the engine control module (ECM) has detected an open circuit or a short to ground in the glow plug heater indicator circuit, which is the wiring that feeds the glow plug warning lamp in the instrument cluster. The ECM expects a specific voltage on the indicator control wire when the glow plugs are commanded on, and it sets this code when the measured voltage stays outside that window for a calibrated time.

DTC codes / Volkswagen codes / P1617

P1617 · VolkswagenGlow Plug Heater Indicator Circuit Open Short To Ground

P1617 on Volkswagen vehicles means the engine control module (ECM) has detected an open circuit or a short to ground in the glow plug heater indicator circuit, which is the wiring that feeds the glow plug warning lamp in the instrument cluster. The ECM expects a specific voltage on the indicator control wire when the glow plugs are commanded on, and it sets this code when the measured voltage stays outside that window for a calibrated time.

SystemPowertrain

Code typeVolkswagen specific

SeverityLow

Fix difficultyIntermediate

AreaComputer and output circuits

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