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Home/DTC Codes/Ferrari/360 Modena/2004-2004 3.6L V8/P0403
P0403

EGR Control Circuit

2004-2004 Ferrari 360 Modena 3.6L V8

Moderate SeverityPowertrainGeneric (SAE)

The 2004 Ferrari 360 Modena is equipped with a 3.6L V8 engine. Below you'll find detailed p0403 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.

Description

Malfunction in the EGR valve control circuit (electrical EGR valves).

Symptoms

  • Check Engine Light
  • EGR not functioning
  • Increased emissions

Common Causes

  • Faulty EGR valve
  • Wiring damage
  • PCM driver failure
  • Corroded connector

Diagnostic Steps

  1. Test EGR valve solenoid resistance
  2. Check wiring
  3. Command EGR with scan tool
  4. Test PCM output

Repair Notes

Replace EGR valve or repair wiring.

Related Codes

P0400Exhaust Gas Recirculation (EGR) FlowP0404EGR Control Circuit Range/Performance

Other Powertrain Codes

P0403 on Other Vehicles

Ferrari 296 GTB

2022-2022 3.0L V6 Hybrid

Ferrari 296 GTB

2023-2023 3.0L V6 Hybrid

Ferrari 296 GTB

2024-2024 3.0L V6 Hybrid

Ferrari 296 GTS

2022-2022 3.0L V6 Hybrid

Ferrari 296 GTS

2023-2023 3.0L V6 Hybrid

Ferrari 296 GTS

2024-2024 3.0L V6 Hybrid

Ferrari 360 Challenge Stradale

2003-2003 3.6L V8

Ferrari 360 Challenge Stradale

2005-2005 3.6L V8

Common Questions

What does code P0403 mean on a 2004-2004 Ferrari 360 Modena?

P0403 stands for "EGR Control Circuit". Malfunction in the EGR valve control circuit (electrical EGR valves).

What are the symptoms of P0403 on a Ferrari 360 Modena?

Common symptoms of P0403 include: Check Engine Light, EGR not functioning, Increased emissions.

What causes P0403 on a 2004-2004 Ferrari 360 Modena?

Common causes of P0403 include: Faulty EGR valve, Wiring damage, PCM driver failure, Corroded connector.

Last updated: March 2026

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