P2230
Barometric Pressure Sensor A Circuit Intermittent/Erratic
Fuel & air metering
Generic OBD-II
Medium
What it means
P2230 means the barometric pressure sensor "A" signal is cutting out or jumping around intermittently. The PCM uses barometric pressure — often read from the MAP sensor — to adjust fueling and timing for altitude, so an erratic signal can cause occasional hesitation. It's usually a wiring, connector, or sensor fault.
Medium
Can I keep driving? Usually driveable — the barometric reading fine-tunes fueling and timing for altitude, so you may notice hesitation or rough running, but it's not dangerous.
Common symptoms
What you'll notice
- Check-engine light on
- Intermittent hesitation or stumble, often as altitude or load changes
- Slightly rough running or minor surging
- Occasional hard-to-start when warm (in more severe cases)
Common causes
Most likely first
- Faulty barometric/MAP sensor (baro is often derived from the MAP sensor)Likely
- Intermittent open or short in the sensor wiring or a chafed harnessCommon
- Poor or corroded connector contact causing a dropping signalCommon
- Bad sensor ground or reference voltageLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check for related pressure-sensor codes (P2226, P2228, P2229).
- Wiggle-test the sensor connector and harness while watching the baro/MAP reading for dropouts.
- Inspect the connector for corrosion, spread pins, and moisture; clean and reseat.
- Verify a steady 5-volt reference and clean ground at the sensor.
- If the signal still cuts out, replace the barometric/MAP sensor as specified.
FAQ
Quick answers
Is it safe to drive with P2230?+
Generally yes. It affects fine fuel and timing adjustments for altitude, so you may feel occasional hesitation, but it isn't a safety risk. Fix it to restore smooth running.
Can I just clear P2230?+
Because the fault is intermittent it may stay away briefly, but it returns until the wiring, connector, or sensor is repaired.
Related codes
Often seen with P2230
Read & clear P2230 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX