Porsche fault codes

19 distinct codes across 15 real diagnostics on Porsche, including the Porsche-specific ones no generic code list can decode.

Porsche-specific codes

These are manufacturer-specific, which means the same code on another marque is a different fault. That is exactly why they have no page of their own and no entry in any generic code list. Scoped to Porsche and ranked by how often we have actually seen them, they are a claim we can stand behind.

• C1200, seen in 2 Porsche diagnostics
• B13BC, seen in 1 Porsche diagnostic
• C1100, seen in 1 Porsche diagnostic
• P1079, seen in 1 Porsche diagnostic
• P1094, seen in 1 Porsche diagnostic
• P1119, seen in 1 Porsche diagnostic
• P1373, seen in 1 Porsche diagnostic
• P181A, seen in 1 Porsche diagnostic
• P18B4, seen in 1 Porsche diagnostic

Standard codes we see most on Porsche

These are standardised, so they mean the same thing on every vehicle. The counts are what we see on Porsche specifically.

• P0020, A camshaft position actuator circuit, bank 2
• P0111, Intake air temperature sensor 1 circuit range/performance
• P0299, Turbocharger underboost condition
• P0343, Camshaft position sensor A circuit high, bank 1
• P0491, Secondary air injection system insufficient flow, bank 1
• P0492, Secondary air injection system insufficient flow, bank 2
• P20EE, SCR NOx catalyst efficiency below threshold, bank 1
• U0418, Invalid data received from brake system control module

What tends to go wrong on Porsche

By share of the codes we have seen on this marque. A description of our own caseload, not a reliability ranking.

• Powertrain, manufacturer-specific, 6 code sightings
• Chassis, manufacturer-specific, 3 code sightings
• Not yet classified, 3 code sightings
• Valve timing and camshaft, 2 code sightings
• Bus communication, 2 code sightings
• Turbo and boost control, 1 code sighting