P0418 Pontiac Code - Secondary Air Injection Pump Relay Control Circuit
Quick Answer
The Powertrain Control Module (PCM) controls the relay by grounding the control circuit via an internal switch called a driver. Common causes include Faulty Air Pump inoperative, Air bypass solenoid harness is open or shorted, Air bypass solenoid circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0418 Pontiac indicates Secondary Air Injection Pump Relay Control Circuit.
- Common causes
- Common causes include Faulty Air Pump inoperative, Air bypass solenoid harness is open or shorted, Air bypass solenoid circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0418 Pontiac Description
The relay controls the high current flow to the AIR injection pump integral bypass valve. This allows the PCM driver to only have to control the relatively low current used by the relay.
What are the Possible Causes of the DTC P0418 Pontiac?
- Faulty Air Pump inoperative
- Air bypass solenoid harness is open or shorted
- Air bypass solenoid circuit poor electrical connection
How to Fix the DTC P0418 Pontiac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0418 Pontiac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P0418 Pontiac code?
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Frequently Asked Questions about P0418 Pontiac Code
1. What are the common symptoms of OBDII code P0418 in a Pontiac related to the Secondary Air Injection Pump Relay Control Circuit?
- Common symptoms include illuminated Check Engine Light, rough idling, decreased engine performance, and potential failure to pass emissions tests.
2. What are the possible causes of OBDII code P0418 in a Pontiac?
- The code P0418 in a Pontiac is commonly triggered by a faulty secondary air injection pump relay, damaged wiring or connectors in the relay control circuit, or a malfunctioning secondary air injection pump.
3. How can I diagnose the cause of OBDII code P0418 in my Pontiac?
- Diagnose the code P0418 by inspecting the relay and its connections for any visible damage, testing the relay control circuit for continuity and voltage, and checking the secondary air injection pump for proper operation.
4. Can I continue driving my Pontiac with OBDII code P0418 present?
- It is not recommended to drive your Pontiac with OBDII code P0418 present, as it can lead to reduced engine performance and potential damage to emissions control components.
5. How can I repair OBDII code P0418 in my Pontiac related to the Secondary Air Injection Pump Relay Control Circuit?
- Repair OBDII code P0418 by replacing the faulty secondary air injection pump relay, repairing any damaged wiring or connectors in the relay control circuit, and ensuring proper operation of the secondary air injection pump.
6. What tools may be needed to repair OBDII code P0418 in a Pontiac?
- Commonly used tools for repairing OBDII code P0418 include a multimeter for testing electrical components, a socket set for removing and installing parts, and a diagnostic scanner for resetting the code.
7. Are there any common mistakes to avoid when dealing with OBDII code P0418 in a Pontiac?
- Avoid replacing parts without proper diagnosis, neglecting to check the wiring and connectors for damage, and driving the vehicle with the code present without addressing the underlying issue.
8. How long does it typically take to repair OBDII code P0418 in a Pontiac?
- The repair time for OBDII code P0418 in a Pontiac can vary depending on the exact cause of the issue, but it generally takes anywhere from 1 to 3 hours to diagnose and fix the problem.
9. Are there any preventive measures to avoid OBDII code P0418 in a Pontiac?
- Regularly inspect and maintain the secondary air injection system components, including the relay, pump, and associated wiring, to prevent issues that may trigger OBDII code P0418.
10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P0418 in a Pontiac?
- Yes, a DIY enthusiast with basic automotive knowledge can repair OBDII code P0418 in a Pontiac by following repair guides, using the right tools, and being cautious when working on electrical components.
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