1230 code(s) in this category. Page 44 of 52. Select one to see the detailed diagnosis.
Red (U)
The vehicle bus reports loss of communication with smart barometric pressure sensor C. Altitude correction for…
The vehicle bus reports loss of communication with smart turbocharger inlet pressure sensor A (compressor inle…
The vehicle bus reports loss of communication with smart turbocharger inlet pressure sensor B (compressor inle…
The vehicle bus reports loss of communication with smart EGR temperature sensor A (typically pre-cooler). EGR …
The vehicle bus reports loss of communication with smart EGR temperature sensor B (typically post-cooler). EGR…
The vehicle bus reports loss of communication with smart EGR temperature sensor C. EGR cooling diagnostic swit…
The vehicle bus reports loss of communication with smart EGR temperature sensor D. EGR cooling diagnostic swit…
The vehicle bus reports loss of communication with smart exhaust pressure sensor A (typically pre-DPF or pre-t…
The vehicle bus reports loss of communication with smart exhaust pressure sensor B (typically post-DPF or post…
The vehicle bus reports loss of communication with smart humidity sensor (intake air or cabin). Humidity-based…
The vehicle bus reports loss of communication with smart HV battery pack coolant pump A. Active battery coolin…
The vehicle bus reports loss of communication with smart HV battery pack coolant pump B. Active battery coolin…
The vehicle bus reports loss of communication with smart DPF differential pressure sensor C. The ECM cannot re…
The vehicle bus reports loss of communication with smart DPF differential pressure sensor D. The ECM cannot re…
The vehicle bus reports loss of communication with smart coolant pump E (electric water pump). Pump speed cann…
The vehicle bus reports loss of communication with smart coolant pump F (electric water pump). Pump speed cann…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 1 sensor 3. Catal…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 1 sensor 4. Catal…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 2 sensor 3. Catal…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 2 sensor 4. Catal…
The vehicle bus reports loss of communication with smart coolant heater A (PTC or fuel-fired booster). Cabin/c…
The vehicle bus reports loss of communication with smart exhaust pressure sensor C. Pressure-based diagnostics…
A receiving module detected implausible data from the ion sense module (used for misfire/knock detection via i…
Manufacturer-specific communication code. Indicates a problem in a proprietary communication network.…