Code Definition

P161F — Glow Plug for Cylinder 6 (Q15) Open Circuit: Upper Limit Exceeded

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Audi

About P161F

P161F is a manufacturer-specific powertrain diagnostic trouble code recorded for Audi vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P161F is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit; and a signal or supply voltage lower than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P161F is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Engine Control Module (ECM) and Glow Plug Control Module (J179) monitor the glow plug circuit for each cylinder to confirm correct electrical resistance and current draw during pre-glow, after-glow, and diagnostic self-test cycles. DTC P161F is set when the control module detects an open circuit or excessively high resistance in the glow plug circuit for cylinder 6 (Q15), resulting in current flow below the calibrated minimum threshold. This indicates the cylinder 6 glow plug is electrically disconnected, has an internally open heating element, or the circuit between the control module and...

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