Acura
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Engine coolant temperature (ECT) sensor - circuit/ intermittent voltage low
Cause:
    Wiring, ECT sensor

Audi
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Heated oxygen sensor (HO2S) 2, Bank 1 - heater resistance too high
Cause:
    Wiring, HO2S

Ford
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    IAT Sensor 2 Circuit Low Conditions
Cause:
    Key on or engine running, then the PCM detected an IAT sensor signal of less than 0 20v (250°F)

GM
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    ECT Sensor Circuit Intermittent Low Input Conditions
Cause:
    No IAT sensor codes set, IAT input below 158°F, engine runtime over 10 seconds, then the PCM detected an intermittent ECT input that was less than 0.25v (271 eF), conditions met for 1 second.

Honda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Engine coolant temperature (ECT) sensor - circuit/ intermittent voltage high
Cause:
    Wiring, ECT sensor

Isuzu
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Engine coolant temperature (ECT) sensor - circuit/ intermittent voltage high
Cause:
    Wiring, ECT sensor, ECM

Mazda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Intake air temperature (IAT) sensor - voltage low
Cause:
    Wiring, IAT sensor, ECM

Volkswagen
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Heated oxygen sensor (HO2S) heater resistance too high
Cause:
    Wiring, HO2S