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 can cause drivability issues and may be due to wiring problems, sensor failure, or ECM issues.
1. Most Common Causes
- Faulty barometric pressure sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Intermittent short or open in the sensor circuit
- Engine Control Module (ECM) malfunction
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Poor engine performance (hesitation, rough idle, stalling)
- Decreased fuel economy
- Difficulty starting the engine
3. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for other related codes.
Step 2: Visually inspect the barometric pressure sensor and its wiring/connectors for damage, corrosion, or loose connections.
Step 3: Test the sensor's voltage and ground signals using a multimeter and compare to manufacturer specifications.
Step 4: If wiring and sensor are okay, test the ECM's ability to read the sensor signal (may require professional scan tool).
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances with this code as it can cause poor engine performance and potential stalling, which may be unsafe.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for parts and labor, depending on whether the sensor or wiring needs replacement.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.