DTC P1450: Barometric Pressure Sensor Circuit Malfunction, Or DTC P1451: Barometric Pressure Sensor Performance Problem: Condition

DTC P1450 is set when Power Control Module (PCM) detects that barometric pressure sensor is out of specification. DTC P1451 is set when barometric pressure calculated using Manifold Absolute Pressure (MAP) sensor does not match barometric pressure sensor output voltage during engine deceleration. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:

• Barometric pressure sensor malfunction.
• MAP sensor malfunction.