Paccar

PACCAR MX (2004 Emissions) Fault Code: P1128 Inlet Air Temperature In Inlet Manifold – Data Valid but Too High SET CONDITIONS:The PCI ECU (D420) detects that the inlet air temperature is above 125?C [257?F]. DIAGNOSTIC CONDITION:The diagnostic starts to run 30 seconds after the engine is started. CORRESPONDING OBD READINESS MONITOR:None RESET CONDITION:This DTC changes to inactive when the fault is no longer detected. REPAIR VERIFICATION:1. Clear all DTCs.2. Test drive or operate the vehicle to meet the diagnostic conditions and set conditions.3. Did the DTC come back?– No, repair successful– Yes, repair unsuccessful POSSIBLE CAUSES:1. Contaminated intercooler2. Faulty engine...

PACCAR MX (2004 Emissions) Fault Code: P1133 Lambda Sensor Heater – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C46) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on the signal or control circuit of the ECU. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. POSSIBLE CAUSES:1. The sensor or actuator signal wiring has a short circuit to supply.2. A malfunction of the sensor or actuator

PACCAR MX (2004 Emissions) Fault Code: P1134 Lambda Sensor Heater – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C46) SET CONDITIONS:This DTC is set when the ECU detects a lower voltage than expected on the signal or control circuit of the ECU. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. POSSIBLE CAUSES:1. The sensor or actuator signal wiring is interrupted.2. The sensor or actuator signal wiring has a short circuit to ground.3. A malfunction in the power supply of the...

PACCAR MX (2004 Emissions) Fault Code: P1135 Lambda Sensor Heater – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C46) SET CONDITIONS:This DTC is set when the ECU detects a higher voltage than expected on the signal or control circuit of the ECU. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. POSSIBLE CAUSES:1. The sensor or actuator signal wiring has a short circuit to supply.2. A malfunction of the sensor or actuator

PACCAR MX (2004 Emissions) Fault Code: P1136 P1136, Lambda Sensor Heater – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C46) SET CONDITIONS:This DTC is set when the ECU detects a lower voltage than expected on the signal or control circuit of the ECU. DIAGNOSTIC CONDITION:The diagnostic runs continuously when the ignition is keyed on. RESET CONDITION:The DTC changes to inactive after the diagnostic runs and passes. POSSIBLE CAUSES:1. The sensor or actuator signal wiring is interrupted.2. The sensor or actuator signal wiring has a short circuit to ground.3. A malfunction in the power supply of...