P1445 Fault Code

Audi – CATALYST TEMPERATURE SENSOR

For Audi, P1445 is logged when the powertrain control module (PCM) has detected an issue with the catalyst temperature sensor.

This happens when the catalyst temperature sensor circuit has malfunctioned or the signal is outside of the allowable range during operation.

These temperature sensors are used to monitor the catalytic converter to ensure that it is performing correctly and safely.

The catalytic converter is responsible for controlling the emission levels from the exhaust system. This is done to comply with emission regulations globally. ENG

See generic codes: P0435, P0436

BMW – DIAGNOSTIC MODULE TANK LEAKED (DM-TL) PUMP CONTROL CIRCUIT SIGNAL LOW

For BMW, P1445 is logged when the powertrain control module (PCM) has detected an issue with the pump control circuit signal for the fuel tank system.

This happens when the PCM performs a diagnostic test of the fuel tank and detects a potential leak in the system.

This system is used to detect the presence of any leaks in the fuel system. This is done to help control the emission levels of the vehicle to comply with international emission regulations.

Fortunately, this fault code is most commonly caused by simply leaving the gas cap unfastened. This means it can be very easy to fix the issue if this is the cause.

See generic codes: P0442, P0455

Ford – PURGE FLOW SENSOR CIRCUIT INPUT HIGH

For Ford, P1445 is logged when the powertrain control module (PCM) has detected an issue with the purge flow sensor circuit. This happens when the input voltage for this sensor is too high.

The purge valve is a component found in the evaporative emissions control (EVAP) system.
It is responsible for trapping fuel vapors before they can escape into the atmosphere.

Once certain conditions are reached, a solenoid will open the valve, allowing the collected fuel
vapors to be fed back into the fuel system.

The code indicates that there is an issue with the circuit controlling the valve, making the problem electrical in nature.

See generic codes: P0441, P0443, P0445

Infiniti – PURGE VOLUME CONTROL/V

For both Infiniti and Nissan, P1445 is logged when the powertrain control module (PCM) has detected an issue with the purge volume control system in the evaporative emissions control (EVAP) system.

The purge valve is a component found in the evaporative emissions control (EVAP) system. It is responsible for trapping fuel vapors before they can escape into the atmosphere.

Once certain conditions are reached, a solenoid will open the valve, allowing the collected fuel
vapors to be fed back into the fuel system.

This fault code does not help pinpoint the cause of the issue, meaning it can be important to assess any additional relevant fault codes before attempting to resolve this one.

One of the most likely causes is a faulty purge valve solenoid that is either stuck open or closed.

See generic codes: P0441, P0443, P0445

Nissan – EVAP CANISTER PURGE VOLUME CONTROL VALVE

For both Nissan and Infiniti, fault code P1455 represents the same issue. For more information on the problem and similar generic fault codes, see the above description for Infiniti.

See generic codes: P0441, P0443, P0445