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P068600 — Main relay, control line - short circuit to ground
Main relay, control line - short circuit to ground. The Taycan, 911 (992), Panamera (971), Panamera (972) and Cayenne report this code; below is which control unit sets it on each model and how to read and clear it.
Which models and control units set P068600
How to read and clear P068600
- Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
- Open STEUER14, pick your car and run a fault scan: every control unit is read, and P068600 shows with its status, its full description and the freeze frame when the unit stores one.
- Fix the cause first, then clear the fault memory and scan again to check it stays away. Reading and clearing fault codes is free on every control unit.
More about fault memory in the manual →
Download STEUER14 — free fault readingOther codes of the Engine Control Module 1
| P064200 | Sensor voltage 1 - short circuit to ground |
| P064300 | Sensor voltage 1 - short circuit to B+ |
| P064F00 | Coding |
| P065200 | Sensor voltage 2 - short circuit to ground |
| P065300 | Sensor voltage 2 - short circuit to B+ |
| P068500 | Main relay, control line - open circuit |
| P068700 | Main relay, control line - short circuit to B+ |
| P068A00 | Main relay - opens too early after engine start |
| P068B00 | ECM/PCM Power Relay De-Energized Performance - Too Late |
| P069800 | Sensor voltage 3 - short circuit to ground |
| P069900 | Sensor voltage 3 - short circuit to B+ |
| P06E900 | Starter does not turn, Mechanically blocked or electrical malfunction |
All 274 codes of this control unit →
Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.