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P0418 – Chevrolet Corvette C5 DTC

Chevrolet Corvette C5 DTC P0418 – Secondary Air Injection (AIR) Pump Relay Control Circuit

DTC P0418 meaning on Chevrolet Corvette C5

DTC P0418 on a Chevrolet Corvette C5 indicates a problem with the Secondary Air Injection (AIR) Pump Relay Control Circuit. This diagnostic trouble code is triggered when the powertrain control module (PCM) detects an issue with the relay control circuit for the secondary air injection pump.

Chevrolet Corvette C5 DTC P0418 symptoms

Symptoms of DTC P0418 on a Chevrolet Corvette C5 may include:

  • Check Engine Light illuminated
  • Reduced engine performance
  • Increased emissions

Chevrolet Corvette C5 DTC P0418 causes

Common causes of DTC P0418 on a Chevrolet Corvette C5 include:

  • Faulty AIR pump relay
  • Wiring issues in the relay control circuit
  • Defective PCM

Chevrolet Corvette C5 DTC P0418 seriousness

While DTC P0418 may not cause immediate drivability issues, it can lead to increased emissions and potential long-term engine problems if left unresolved. It is important to address this issue promptly to maintain the vehicle’s performance and emissions compliance.

How to diagnose DTC P0418 on Chevrolet Corvette C5

To diagnose DTC P0418 on a Chevrolet Corvette C5, follow these steps:

  1. Use a scan tool to retrieve the DTC and freeze frame data
  2. Inspect the AIR pump relay and related wiring for damage or corrosion
  3. Check the relay control circuit for continuity and proper voltage
  4. Test the AIR pump relay for proper operation
  5. Verify PCM functionality and connections

How to fix DTC P0418 on Chevrolet Corvette C5

To fix DTC P0418 on a Chevrolet Corvette C5, consider the following steps:

  1. Replace the faulty AIR pump relay if necessary
  2. Repair any damaged or corroded wiring in the relay control circuit
  3. If the PCM is determined to be defective, replace it with a new unit
  4. Clear the DTC using a scan tool after completing repairs

How to erase DTC P0418 on Chevrolet Corvette C5

To erase DTC P0418 on a Chevrolet Corvette C5, use a scan tool to clear the code from the PCM’s memory. After completing any necessary repairs to address the underlying issue causing the DTC, clearing the code will reset the Check Engine Light and ensure proper monitoring of the system moving forward.

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← All Chevrolet Corvette C5 Diagnostic Trouble Codes

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