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P304600 — Starter relay 1 - does not switch

Starter relay 1 - does not switch. The 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 P304600

Porsche Cayenne (9YA)

Engine Control Module 1

How to read and clear P304600

  1. Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
  2. Open STEUER14, pick your car and run a fault scan: every control unit is read, and P304600 shows with its status, its full description and the freeze frame when the unit stores one.
  3. 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 →

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Other codes of the Engine Control Module 1

P2B3100Left radiator fan (RF3) – performance too low
P2B6400Additional coolant pump (P5) – temperature too high
P2B6500Additional coolant pump (P5) – dry run
P2B8600Coolant pump – dry run
P2B9E00Coolant pump – temperature too high
P304000Transmission position implausible
P304700Starter relay 2 - short circuit to B+
P304800Starter relay 2 - short circuit to ground
P304900Starter relay 2 - open circuit
P305000Starter relay 2 - does not switch
P305200Terminal 50, feedback line - short circuit to B+
P305300Terminal 50, feedback line - short circuit to ground/open circuit

All 250 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.