Barometric Pressure Sensor Circuit Intermittent/Erratic
The P2230 code indicates that the Engine Control Module (ECM) has detected an intermittent or erratic signal from the barometric pressure (BARO) sensor circuit. This sensor measures atmospheric pressure to help the ECM adjust fuel delivery and ignition timing. An intermittent fault may be caused by loose connections, damaged wiring, or a failing sensor, leading to drivability issues.
01. Most Common Causes
- Faulty barometric pressure sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Loose or intermittent electrical connections
- ECM software or hardware issue (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Poor engine performance, hesitation, or stalling
- Rough idle or surging
- Decreased fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the BARO sensor and its wiring for damage, corrosion, or loose connections.
Step 3: Use a multimeter to check sensor voltage and ground circuits; compare to manufacturer specs.
Step 4: If wiring is intact, test the sensor output with a scan tool while varying engine load (e.g., revving engine).
Step 5: Replace the sensor if readings are erratic or out of range.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the erratic sensor can cause poor performance, stalling, or reduced fuel economy. Have it diagnosed promptly.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, depending on the sensor location and labor rates.