AutoCodes – Chevrolet – P1218 Chevrolet

P1218 Chevrolet Code - Injection Pump Calibration Circuit

Quick Answer

The Powertrain Control Module (PCM) uses a calibrated resistor internally in the Injection Pump to determine fuel rates. Common causes include Powertrain Control Module (PCM) currently does not have a resistor value, Powertrain Control Module (PCM) is unable to read resistor value. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P1218 Chevrolet indicates Injection Pump Calibration Circuit.
Common causes
Common causes include Powertrain Control Module (PCM) currently does not have a resistor value, Powertrain Control Module (PCM) is unable to read resistor value.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 13,396
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 14, 2019
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Code P1218 Chevrolet Description

The Powertrain Control Module (PCM) uses a calibrated resistor internally in the Injection Pump to determine fuel rates. the resistor value is stored in the PCM memory. If the PCM memory has been disturbed or replaced the PCM will relearn the resistor value on the next ignition cycle. The code is set when the key ON or engine running and PCM does not detects a correct current valid resistor value, or it determined that it was unable to read the current resistor value.
OBDII Code P1218 Chevrolet - Injection Pump Calibration Circuit - AutoCodes.com
P1218 Chevrolet Code - Injection Pump Calibration Circuit

What are the Possible Causes of the DTC P1218 Chevrolet?

  • Powertrain Control Module (PCM) currently does not have a resistor value
  • Powertrain Control Module (PCM) is unable to read resistor value

How to Fix the DTC P1218 Chevrolet?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1218 Chevrolet 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 P1218 Chevrolet code?

Need more information on how to fix the P1218 Chevrolet code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1218 Chevrolet Code

1. What are the common symptoms of OBDII code P1218 in a Chevrolet related to the Injection Pump Calibration Circuit?

- Common symptoms include rough idling, reduced engine performance, and problems with acceleration.

2. What are the possible causes of OBDII code P1218 in a Chevrolet?

- The code P1218 in a Chevrolet can be triggered by issues such as a faulty injection pump, damaged wiring, or a malfunctioning injection pump calibration circuit.

3. How can I diagnose the OBDII code P1218 in a Chevrolet?

- Diagnosis typically involves using a scan tool to read the code, inspecting the injection pump and related components, and testing the wiring for continuity and proper voltage.

4. What should I check first when troubleshooting OBDII code P1218 in a Chevrolet?

- Start by checking the wiring connections to the injection pump and ensuring they are secure and free of damage. This is a common cause of the P1218 code.

5. Can I continue driving my Chevrolet with OBDII code P1218 present?

- It is not recommended to continue driving with the P1218 code active, as it can lead to further engine damage and potentially unsafe driving conditions.

6. How do I repair OBDII code P1218 in a Chevrolet?

- Repairing the P1218 code involves addressing the root cause, which may include replacing the injection pump, repairing damaged wiring, or recalibrating the injection pump calibration circuit.

7. Is it possible to reset OBDII code P1218 in a Chevrolet without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear until the underlying problem causing the P1218 code is addressed.

8. Can a DIY enthusiast fix OBDII code P1218 in a Chevrolet?

- Depending on the level of expertise and access to tools, some DIY enthusiasts may be able to diagnose and repair the P1218 code themselves. However, complex issues may require professional assistance.

9. How much does it typically cost to repair OBDII code P1218 in a Chevrolet at a mechanic or dealership?

- The cost of repairing the P1218 code in a Chevrolet can vary widely depending on the specific issue causing the code, the labor rates of the mechanic or dealership, and any parts that need to be replaced.

10. Are there any preventive measures to avoid OBDII code P1218 in a Chevrolet?

- Regular maintenance, including checking the injection pump and related components, can help prevent issues that may trigger the P1218 code. Additionally, addressing any engine performance issues promptly can prevent further damage.

Discuss the causes and fixes for P1218 Chevrolet OBDII Code

  • 2000 chevy Malibu - the 1218 code says "pump circuit short" - what is the fix

  • I have not replaced any parts - I may buy the vehicle and want to know what the code means so I can get an idea of cost to repair.

  • I check the factory service manual and I cna't find any information for the P1218 on your vehicle. The code is for vehicle with diesel engines. Please double check the code number.

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