Barometric Pressure Sensor Circuit High
The P222D code indicates that the Engine Control Module (ECM) has detected a voltage signal from the barometric pressure sensor that is higher than the expected range. This sensor measures atmospheric pressure to help the ECM adjust fuel delivery and ignition timing. A high circuit voltage can be caused by a faulty sensor, wiring issues (short to voltage), or a problem with the ECM itself.
01. Most Common Causes
- Faulty barometric pressure sensor
- Short to voltage in sensor circuit wiring
- Corroded or damaged connector
- ECM internal failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Poor engine performance or hesitation
- Decreased fuel economy
- Rough idle or stalling
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to verify the code and check for additional codes.
Step 2: Inspect the barometric pressure sensor connector and wiring for damage, corrosion, or shorts.
Step 3: Test the sensor's voltage reference and signal output with a multimeter.
Step 4: Compare sensor readings to actual barometric pressure; replace sensor if out of range.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally not recommended to drive long distances as the engine may run poorly, potentially causing further damage or stalling.
How much does it cost to fix?▼
The typical repair cost ranges from $50 to $150, including parts and labor, depending on the vehicle and shop rates.