Conditions for Setting the DTC

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

P0121

Throttle Position Sensor 1 = Stuck in range - For greater than 1 s

P0122

Throttle Position Sensor 1 = Less than 0.3 V - For greater than 1 s

P0123

Throttle Position Sensor 1 = Greater than 4.7 V - For greater than 1 s

P0222

Throttle Position Sensor 2 = Less than 0.3 V - For greater than 1 s

P0223

Throttle Position Sensor 2 = Greater than 4.6 V - For greater than 1 s

P16A0

Serial Data circuit = Less than 0.5 V - For greater than 1 s

P16A1

Serial Data circuit = Greater than 4.1 V - For greater than 1 s

P16A2

Serial Data circuit = Message Counter Incorrect/Too Many Pulses/Too Few Pulses

P2135

Throttle Position Sensor 1, 2 = Not within 7-10% of each other - For greater than 1 s