Unswitched Battery Supply Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 434PID: S251SPN: 627FMI: 2/2LAMP: YellowSRT: Supply voltage to the electronic control module (ECM) fell below (+) 6.2-VDC for…
Intake Manifold Pressure Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 433PID: P102SPN: 102FMI: 2/2LAMP: YellowSRT: Voltage signal at the intake manifold pressure circuit indicates high intake manifold pressure,…
Accelerator Pedal Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 432PID: S230SPN: 558FMI: 13/13LAMP: RedSRT: Voltage detected at idle validation on-idle circuit when voltage at throttle position circuit indicates…
Idle Validation Switch Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 431PID: P091SPN: 91FMI: 2/2LAMP: YellowSRT: No voltage detected simultaneously on both the idle validation off-idle and on-idle signal…
Idle Validation Switch Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 431PID: P091SPN: 91FMI: 2/2LAMP: YellowSRT: Voltage detected simultaneously on both the idle validation off-idle and on-idle signal pins.…
Idle Validation Switch Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 431PID: S230SPN: 558FMI: 2/2LAMP: YellowSRT: No voltage detected simultaneously on both the idle validation off-idle and on-idle signal…
FAULT CODE 72-fc431Fault Code Path Selection Do you have an NISS throttle pedal? Go to 72-fc431niss Do you have an ISS throttle pedal? Go to…
Water-In-Fuel (WIF) Sensor Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 429PID: P097SPN: 97FMI: 4/4LAMP: YellowSRT: Low voltage detected at water-in-fuel (WIF) sensor circuit. None on performance. Water-In-Fuel (WIF)…
Water-In-Fuel (WIF) Sensor Circuit Printable Version Overview CODE REASON EFFECT Fault Code: 428PID: P097SPN: 97FMI: 3/3LAMP: YellowSRT: High voltage detected at water-in-fuel (WIF) sensor circuit. None on performance. Water-In-Fuel (WIF)…
J1939 Datalink Communication Printable Version Overview CODE REASON EFFECT Fault Code: 426PID: S231SPN: 639FMI: 2/2LAMP: NoneSRT: Communication between the electronic control module (ECM) and another device on the J1939 datalink…