This fault is typically one of the following: □ DPF Regen Inhibit Switch message stopped arriving □ DPF Regen Force Switch message stopped arriving 123.1.1…

This diagnosis is typically an open circuit, short to ground or short to power. 122.1.1 Open Circuit, Short to Ground or Short to Power Check…

This diagnosis is typically an open circuit, short to ground or short to power. 121.1.1 Open Circuit, Short to Ground or Short to Power Check…

This diagnosis is typically an open circuit, short to ground or short to power. 120.1.1 Open Circuit, Short to Ground or Short to Power Check…

This diagnosis is typically an open circuit, short to ground or short to power. 119.1.1 Open Circuit, Short to Ground or Short to Power Check…

This diagnosis is typically an open circuit, short to ground or short to power. 118.1.1 Open Circuit, Short to Ground or Short to Power Check…

This diagnosis is typically an open circuit, short to ground or short to power. 117.1.1 Open Circuit, Short to Ground or Short to Power Check…

This fault is typically the J1939 ESS message is missing. 114.1.1 Missing ESS Message Check Check as follows: 1. Check for multiple codes: [a] If…

This diagnosis is typically proportional valve bank 1 circuit failed low. 113.1.1 Circuit Check Check as follows: 1. Turn the ignition ON (key ON, engine…

This diagnosis for SPN 3588/FMI 5 is typically an open circuit. 112.3.1 Open Circuit Check Check as follows: 1. Disconnect the Ether Start connector at…