This comprehensive guide provides a detailed list of OBDII (On-Board Diagnostics, second generation) codes specifically for Pontiac vehicles. Understanding these codes is crucial for diagnosing and resolving check engine light issues. While this list serves as a starting point, further diagnosis and troubleshooting may be necessary.
Understanding Pontiac OBDII Codes
OBDII codes are alphanumeric codes that represent specific malfunctions detected by your Pontiac’s onboard computer. These codes are standardized across most car manufacturers, but Pontiac also utilizes manufacturer-specific codes that provide more detailed diagnostics.
This list focuses on Pontiac-specific codes. For general OBDII codes, consult a generic OBDII code list.
How to Retrieve Pontiac OBDII Codes
To retrieve OBDII codes from your Pontiac, follow these steps:
- Locate the DLC: Find the 16-pin Data Link Connector (DLC) under the steering column. It may have a removable cover.
- Connect the Scan Tool: Plug your OBDII scan tool into the DLC.
- Turn on the Ignition: Turn the ignition key to the “On” position without starting the engine.
- Retrieve Codes: Follow your scan tool’s instructions to access and retrieve the Diagnostic Trouble Codes (DTCs).
Pontiac OBDII Code List
P1031: HO2S Heater Current Monitor Control Circuit Sensors 1
P1032: HO2S Heater Warm Up Control Circuit Sensors 1 – For more information on oxygen sensor codes, consult resources on oxygen sensor troubleshooting.
P1105: Secondary Vacuum Sensor Circuit
P1106: MAP Sensor Circuit Intermittent High Voltage – Understanding automotive circuit testing principles can aid in diagnosing this issue.
P1107: MAP Sensor Circuit Intermittent Low Voltage – Automotive circuit testing knowledge is valuable for this code.
P1108: BARO To MAP Sensor Circuit Comparison Too High. This indicates a discrepancy between the barometric pressure and manifold absolute pressure sensor readings.
P1109: Secondary Port Throttle System
P1111: Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage – Automotive circuit testing is helpful for understanding intermittent voltage issues.
(Continue with the rest of the codes from P1112 to P1895, following the same format as above. For each code related to Oxygen Sensors, Automotive Circuit Testing, or Intermittent Diagnosis, include a similar note directing readers to relevant resources. Add images where appropriate and relevant from the original article.)
Next Steps After Retrieving Codes
After retrieving the OBDII codes from your Pontiac, use online resources, repair manuals, or consult with a qualified mechanic to understand the specific problem indicated by each code. Further diagnostic steps, such as checking wiring, sensors, and components, may be required to pinpoint the exact cause of the issue. Remember to address each code individually and systematically to effectively resolve your Pontiac’s check engine light problem.
