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Additional Exhaust Regulation (DTC) Index

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P0410 system check after SAI PZEV only Check the Secondary Air System. Refer to CATALYTIC CONVERTER, CHECKING . deviation SAI pressure, >20.0 hPa
  • mass air flow, 7...150kg/h
  • Delta engine load, -10...10% rev
  • ECT, 5...39.8° C
  • IAT, 5...40° C
  • altitude, <2700 m
  • SAI pressure sensor, ready no fault.
 10 Sec
  • Once/DCY
  • 2 DCY
P0413 open circuit PZEV only Check the Secondary Air System. Refer to CATALYTIC CONVERTER, CHECKING . signal voltage, 9.25...11.25 V
  • air valve, commanded off
  • engine speed, >80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P0414 short to ground PZEV only Check the Secondary Air System. Refer to CATALYTIC CONVERTER, CHECKING . signal voltage <6.00 V
  • air valve, commanded off
  • engine speed, >80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P0415 short to B+ PZEV only Check the Secondary Air System. Refer to CATALYTIC CONVERTER, CHECKING . signal current 2.20...4.20 A
  • air valve, commanded on
  • engine speed, >80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P0418 Air pump relay. Open circuit. PZEV only Check the Secondary Air System. Refer to CATALYTIC CONVERTER, CHECKING . signal voltage 4.50...5.50 V
  • pump relay commanded off
  • engine speed, >80 RPM
 0.50 Sec
  • Continuous
  • 2 DCY
P0420  Catalyst System (front) Efficiency Below Threshold (Bank 1) PZEV only -- Check the Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR HO2S, CHECKING .-- Check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR O2S BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING .-- Check the Three Way Catalytic Converter (TWC). Refer to CATALYTIC CONVERTER, CHECKING .
  • measured OSC / OSC of borderline catalyst value for front catalyst, <0.40
  • OR
  • value for front catalyst, <1.30
  • AND
  • value for main catalyst, <1.20
  • Time after engine start, > 0 Sec.
  • Delta exhaust mass airflow, < 27.1 kg/h
  • exhaust gas mass flow, lower range, 25.0...80.0 kg/h
  • exhaust gas mass flow, upper range, 60.0...160.0 kg/h
  • modeled exhaust gas temp. in catalyst system, lower range, 490...660° C
  • modeled exhaust gas temp in catalyst system, upper range, 640...780° C
  • Engine speed, 1200-3520 RPM
  • number of checks, 4
  • O2S front, ready no fault
  • O2S rear, ready no fault
  • SAS not active
  • no misfire
 50 Sec
  • Once/DCY
  • 2 DCY
P0420  Catalyst System (main) Efficiency Below Threshold (Bank 1) PZEV only -- Check the Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR HO2S, CHECKING .-- Check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR O2S BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING .-- Check the Three Way Catalytic Converter (TWC). Refer to CATALYTIC CONVERTER, CHECKING .
  • measured OSC / OSC of borderline catalyst value for main catalyst, <0.90
  • WHILE
  • value for front catalyst, <2.00
  • Time after engine start, > 80 Sec.
  • Delta exhaust mass airflow, < 30.0 kg/h
  • exhaust gas mass flow, lower range, 25.0...80.0 kg/h
  • exhaust gas mass flow, upper range, 60.0...160.0 kg/h
  • modeled exhaust gas temp. in catalyst system, lower range, 435...660° C
  • modeled exhaust gas temp in catalyst system, upper range, 530...740° C
  • Engine speed, 1200-3520 RPM
  • number of checks, 4
  • O2S front, ready no fault
  • O2S rear, ready no fault
  • SAS not active
  • no misfire
 50 Sec
  • Once/DCY
  • 2 DCY
P0420  Catalyst System (only bin 5, ULEV) Efficiency Below Threshold (Bank 1) -- Check the Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR HO2S, CHECKING .-- Check the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR O2S BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING .-- Check the Three Way Catalytic Converter (TWC). Refer to CATALYTIC CONVERTER, CHECKING . measured OSC / OSC of borderline catalyst. EWMA filter value for catalyst, <.20
  • Time after engine start, > 2.2 Sec.
  • Delta exhaust mass airflow, < 30.0 kg/h
  • exhaust gas mass flow, lower range, 23.0...85.0 kg/h
  • exhaust gas mass flow, upper range, 60.0...130.0 kg/h
  • modeled exhaust gas temp. in catalyst system, lower range, 500...710° C
  • modeled exhaust gas temp in catalyst system, upper range, 660...800° C
  • Engine speed, 1200-3600 RPM
  • number of checks, 6
  • O2S front, ready no fault
  • O2S rear, ready no fault
  • SAS not active
  • no misfire
 50 Sec
  • Once/DCY
  • 1 DCY
P0441  Evaporative Emission System Incorrect Purge Flow -- Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to EVAPORATIVE PURGE REGULATOR VALVE, CHECKING .-- Check the Leak Detection Pump (LDP) -V144-. Refer to LEAK DETECTION PUMP, CHECKING . Reaction of idle controller or lambda controller Deviation less than .079% lambda controller AND < 35% idle controller deviation
  • EVAP purge flow integral,> 60...150g
  • OR
  • integrated air mass, 5500...8016kg
  • Engine speed, Idle RPM
  • Engine speed Deviation, < 80 RPM
  • ECT, >55° C or Substitute ECT, >80 °C
  • IAT, > 4° C
  • Altitude, <2700 m
  • lambda control, closed loop
 22 Sec
  • Once/ DCY
  • 2 DCY
P0442  Evaporative Emission System Leak Detected (Small Leak) -- Check the EVAP System, for Leaks. Refer to EVAPORATIVE SYSTEM, CHECKING FOR LEAKS .-- Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to EVAPORATIVE PURGE REGULATOR VALVE, CHECKING .-- Check the Leak Detection Pump (LDP) -V144-. Refer to LEAK DETECTION PUMP, CHECKING . Time for pressure drop < 1.55...1.75 Sec.
  • Time after engine start> 5...65530 Sec.
  • ECT, 4...120° C
  • ECT at start, 4...50° C
  • engine off time, >21600 Sec
  • ambient air temp 4...59° C
  • ambient air temp drop after engine start, < 8 K
  • Intake manifold vacuum, > 2560 hPa
  • Altitude, < 2700 m
  • Vehicle speed, > 40 km/h once Selected gear, Any drive
  • restart temp difference, >0.0 K
  • EVAP purge valve closed
  • LDP, Activated
  • Delta ambient pressure, < 2.5 hPa
  • delta vehicle speed not >150 km/h
 150.4 Sec
  • Once DCY
  • 2 DCY
P0444 Evaporative Emission System Purge Control Valve Circuit Open -- Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to EVAPORATIVE PURGE REGULATOR VALVE, CHECKING . Signal voltage> 4.40... 5.40 V
  • EVAP purge valve, Commanded off
  • Engine speed, > 80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P0455  Evaporative Emission System Leak Detected (gross leak/no flow) -- Check the EVAP System, for Leaks. Refer to EVAPORATIVE SYSTEM, CHECKING FOR LEAKS .-- Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to EVAPORATIVE PURGE REGULATOR VALVE, CHECKING .-- Check the Leak Detection Pump (LDP) -V144-. Refer to LEAK DETECTION PUMP, CHECKING . Time for pressure drop < 0.95 Sec.
  • Time after engine start> 5...65530 Sec.
  • ECT, 4...120° C
  • ECT at start, 4...50° C
  • engine off time, >21600 Sec
  • ambient air temp 4...59° C
  • ambient air temp drop after engine start, < 12 K
  • Intake manifold vacuum, > 2560 hPa
  • Altitude, < 2700 m
  • Vehicle speed, > 40 km/h once Selected gear, Any drive
  • restart temp difference, >0.0 K
  • EVAP purge valve closed
  • LDP, Activated
  • Delta ambient pressure, < 2.50 hPa
  • delta vehicle speed not >150 km/h
 120 Sec
  • Once/DCY
  • 2 DCY
P0456  Evaporative Emission System Leak Detected (very small leak) -- Check the EVAP System, for Leaks. Refer to EVAPORATIVE SYSTEM, CHECKING FOR LEAKS .-- Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to EVAPORATIVE PURGE REGULATOR VALVE, CHECKING .-- Check the Leak Detection Pump (LDP) -V144-. Refer to LEAK DETECTION PUMP, CHECKING .
  • <5.0 -6.5 Sec.
  • Time after engine start> 5...65530 Sec.
  • ECT, 4...120° C
  • ECT at start, 4...50° C
  • engine off time, >21600 Sec
  • ambient air temp 4...59° C
  • ambient air temp drop after engine start, < 5 K
  • Intake manifold vacuum, > 2560 hPa
  • Altitude, < 2700 m
  • Vehicle speed, > 40 km/h once Selected gear, Any drive
  • restart temp difference, >0.0 K
  • EVAP purge valve closed
  • LDP, Activated
  • Delta ambient pressure, < 2.5 hPa
  • delta vehicle speed not >150 km/h
  • vehicle acceleration< 3.50 m/s2
  • delta engine load< 767.98 %/seg
 180 Sec
  • once DCY
  • 2 DCY
P0458 Evaporative Emission System Purge Control Valve Circuit Low -- Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to EVAPORATIVE PURGE REGULATOR VALVE, CHECKING . Signal voltage, <2.15...3.25 V
  • EVAP purge valve, Commanded off
  • Engine speed, >80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P0459 Evaporative Emission System Purge Control Valve Circuit High -- Check the Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to EVAPORATIVE PURGE REGULATOR VALVE, CHECKING . Signal current, > 2.20 A
  • EVAP purge valve, Commanded on
  • Engine speed, >80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P0491 Secondary Air System Insufficient Flow. flow check during cat. heating. PZEV only Check the Secondary Air System. Refer to CATALYTIC CONVERTER, CHECKING . SAI pressure measured with SAI pressure sensor vs modeled < 0.6 (0.62) %
  • mass air flow, 7...150kg/h
  • Delta engine load, -10...10% rev
  • ECT, 5...60° C
  • IAT, 5...40° C
  • altitude, <2700 m
  • SAI pressure sensor, ready no fault.
 18.5 Sec
  • Once/DCY
  • 2 DCY
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