The P2445 code indicates that the engine control module (PCM) commanded the secondary air injection pump for bank 1 to operate, but the system detected that the pump remained off. This system is designed to pump fresh air into the exhaust stream during cold starts to help the catalytic converter reach operating temperature more quickly.
The electric motor inside the secondary air pump has an internal electrical failure or has seized mechanically.
A blown fuse or a failed relay prevents electrical power from reaching the air pump.
Corroded connectors, frayed wires, or open circuits between the PCM and the pump.
A severely blocked air filter or debris in the pump intake preventing the pump from functioning as expected.
The engine control module is unable to send the trigger signal to the pump relay.
Generally, no. The secondary air system is only active during the first few minutes of a cold start; once the engine is warm, the system is inactive and does not affect performance.
While it won't affect drivability, the vehicle will fail an emissions test, and the catalytic converters may take longer to warm up, slightly increasing cold-start emissions.
No. It is very rare for the PCM to be the cause of P2445. In the vast majority of cases, the issue is the pump itself, a relay, or the wiring.