1230 code(s) in this category. Page 39 of 52. Select one to see the detailed diagnosis.
Red (U)
The vehicle bus reports loss of communication with smart IAT sensor 1 on bank 2. Charge-air density correction…
The vehicle bus reports loss of communication with smart IAT sensor 2 on bank 1 (typically post-intercooler). …
The vehicle bus reports loss of communication with smart IAT sensor 2 on bank 2 (typically post-intercooler). …
The vehicle bus reports loss of communication with smart engine coolant bypass valve A. Bypass switching for t…
The vehicle bus reports loss of communication with smart engine coolant bypass valve B. Bypass switching for t…
The vehicle bus reports loss of communication with smart engine coolant bypass valve C. Bypass switching for t…
The vehicle bus reports loss of communication with smart engine coolant bypass valve D. Bypass switching for t…
The vehicle bus reports loss of communication with smart reductant (DEF/AdBlue) level sensor A. Tank-level mon…
The vehicle bus reports loss of communication with smart reductant (DEF/AdBlue) level sensor B. Tank-level mon…
The vehicle bus reports loss of communication with smart reductant (DEF/AdBlue) level sensor C. Tank-level mon…
The vehicle bus reports loss of communication with smart reductant (DEF/AdBlue) temperature sensor A. Heater c…
The vehicle bus reports loss of communication with smart reductant (DEF/AdBlue) temperature sensor B. Heater c…
The vehicle bus reports loss of communication with the battery isolation / voltage stabilization module (typic…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 1 sensor 1 (typic…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 1 sensor 2 (typic…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 2 sensor 1 (typic…
The vehicle bus reports loss of communication with smart exhaust gas temperature sensor bank 2 sensor 2 (typic…
The vehicle bus reports loss of communication with smart coolant pump A (electric water pump). Pump speed cann…
The vehicle bus reports loss of communication with smart coolant pump B (electric water pump). Pump speed cann…
The vehicle bus reports loss of communication with smart fuel rail pressure sensor on bank 1. The high-pressur…
The vehicle bus reports loss of communication with smart A/C refrigerant pressure sensor A. Compressor cycling…
The vehicle bus reports loss of communication with smart A/C refrigerant temperature sensor A. Superheat / sub…
The vehicle bus reports loss of communication with smart A/C refrigerant pressure sensor B. Compressor cycling…
The vehicle bus reports loss of communication with smart A/C refrigerant temperature sensor B. Superheat / sub…