Injection Pump Calibration Circuit
Table of contents
P1218 BUICK Possible Causes
- Powertrain Control Module (PCM) currently does not have a resistor value
- Powertrain Control Module (PCM) is unable to read resistor value
How do I fix code P1218 BUICK?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
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.
Cost of diagnosing the P1218 BUICK code
The cost of diagnosing the P1218 BUICK code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1218 BUICK 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.