P1108 Cadillac Code - BARO To MAP Sensor Circuit Comparison Too High
Quick Answer
The P1108 diagnostic trouble code for Cadillac vehicles indicates a problem with the BARO (Barometric Pressure) to MAP (Manifold Absolute Pressure) sensor circuit comparison being too high. Common causes include Faulty BARO sensor, Faulty MAP sensor, Wiring or connector issues. 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
- P1108 Cadillac indicates BARO To MAP Sensor Circuit Comparison Too High.
- Common causes
- Common causes include Faulty BARO sensor, Faulty MAP sensor, Wiring or connector issues.
- 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 P1108 Cadillac Description
The P1108 diagnostic trouble code for Cadillac vehicles indicates a problem with the BARO (Barometric Pressure) to MAP (Manifold Absolute Pressure) sensor circuit comparison being too high. The BARO sensor measures the atmospheric pressure outside the vehicle, while the MAP sensor measures the pressure inside the intake manifold. The Engine Control Module (ECM) compares the readings from these two sensors to ensure that they are within a certain range. If the ECM detects that the comparison is too high, it triggers the P1108 code.
Common Causes of P1108 Cadillac
- Faulty BARO sensor
- Faulty MAP sensor
- Wiring or connector issues
- Vacuum leaks
- ECM problem
Symptoms of P1108 Cadillac
- Rough idling
- Stalling
- Hesitation during acceleration
- Decreased fuel efficiency
- Check Engine Light illuminated
How to Fix P1108 Cadillac
- Perform a visual inspection of the BARO and MAP sensors, wiring, and connectors to check for any visible damage or corrosion.
- Test the BARO and MAP sensors using a multimeter to determine if they are within specifications.
- Check for vacuum leaks in the intake system and repair or replace any damaged hoses.
- Clear the fault codes from the ECM using a scan tool and monitor the sensor readings to ensure they are within the correct range.
- If the issue persists, consider replacing the faulty sensor or repairing any wiring or connector problems.
Cost to Fix P1108 Cadillac
The cost estimate for addressing the P1108 code in a Cadillac vehicle can vary depending on the specific cause of the issue. In general, replacing a sensor such as the BARO or MAP sensor can range from $100 to $300 per sensor, including parts and labor. If wiring or connector issues are the culprit, additional diagnostic time and labor may be required, potentially increasing the overall repair cost. It's recommended to consult with a professional mechanic for a more accurate estimate based on the specific circumstances of the vehicle.
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