P1451 GMC Code - Barometric Pressure Sensor Performance
Quick Answer
With the key on for 2 seconds or engine cranked for 2 seconds, the Powertrain Control Module (PCM) detects that the BARO Pressure sensor input was less than 33 kPa, or was more than 134 kPa, or during the Input Range Check, that the BARO Pressure sensor indicated an input greater than or equal to 135 kPa, condition met for 2 seconds. Common causes include Faulty Barometric Pressure Sensor, Barometric Pressure Sensor harness is open or shorted, Barometric Pressure Sensor circuit poor electrical connection. 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
- P1451 GMC indicates Barometric Pressure Sensor Performance.
- Common causes
- Common causes include Faulty Barometric Pressure Sensor, Barometric Pressure Sensor harness is open or shorted, Barometric Pressure Sensor circuit poor electrical connection.
- 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.
Code P1451 GMC Description
What are the Possible Causes of the DTC P1451 GMC?
- Faulty Barometric Pressure Sensor
- Barometric Pressure Sensor harness is open or shorted
- Barometric Pressure Sensor circuit poor electrical connection
How to Fix the DTC P1451 GMC?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1451 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1451 GMC Code
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