AutoCodes – Generic – P1218

P1218 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 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.

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Code Popularity 34,185

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 14, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P1218 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 - Injection Pump Calibration Circuit - AutoCodes.com — P1218 Code - Injection Pump Calibration Circuit

What does this mean?

What are the Possible Causes of the DTC P1218?

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?

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 does this mean?

Code Tech Notes

The P1218 code usually sets when the resistor is missing out of the PMD or the system has been disturbed and the ECU is re-learning the resistor value. Most of the times the problem is the missing resistor. Cycling the key many times will relearn the resistor value.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1218 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 code?

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

Need Help with the Code?

Get the P1218 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1218 Audi — Injector Circuit Cylinder 6 Short To Positive
P1218 Buick — Injection Pump Calibration Circuit
P1218 Cadillac — Injection Pump Calibration Circuit
P1218 Chevrolet — Injection Pump Calibration Circuit
P1218 Dodge — Radiator Temperature Sensor Volts Too High
P1218 Ford — CID High
P1218 GMC — Injection Pump Calibration Circuit
P1218 Volkswagen — Injector Circuit Cylinder 6 Short To Positive

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 Code

1. What are the common symptoms of OBDII code P1218 (Injection Pump Calibration Circuit)?

- Common symptoms include hard starting, rough idling, lack of power, and poor fuel efficiency.

2. What causes OBDII code P1218 to trigger?

- The code is typically triggered by a malfunction in the injection pump calibration circuit, which may be due to a faulty injection pump, wiring issues, or a bad connection.

3. How can I diagnose the cause of OBDII code P1218?

- Diagnosing the cause of P1218 requires a thorough inspection of the injection pump circuit, checking for wiring faults, loose connections, or a malfunctioning injection pump.

4. What are some repair tips for resolving OBDII code P1218?

- Repair options may include repairing or replacing damaged wiring, ensuring proper connections, or replacing the injection pump if necessary.

5. Can I drive my vehicle with OBDII code P1218?

- It is not recommended to drive your vehicle with code P1218 as it can lead to poor engine performance and potential damage to the injection system.

6. How much does it typically cost to repair OBDII code P1218?

- The cost of repairing OBDII code P1218 can vary depending on the specific cause of the issue, but it may range from a couple of hundred dollars to over a thousand dollars for more severe cases.

7. Is OBDII code P1218 a common issue in certain vehicle models?

- OBDII code P1218 is more commonly seen in diesel vehicles with injection pump systems, particularly in older models or those with high mileage.

8. Can a DIY enthusiast fix OBDII code P1218 at home?

- While some DIY enthusiasts may be able to diagnose and repair OBDII code P1218, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair.

9. Will resetting the OBDII code P1218 make the issue go away?

- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying issue causing OBDII code P1218 to trigger.

10. How can I prevent OBDII code P1218 from recurring in the future?

- Regular maintenance of the injection pump system, including checking for wiring issues, ensuring proper connections, and using high-quality fuel, can help prevent the recurrence of OBDII code P1218.