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Sae P2XXX Diagnostic Trouble Codes

Fuel and Air ratios, control module 

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P2100 Throttle Actuator Control Motor Circuit/Open -- Check the Mass Air Flow (MAF) Sensor -G70-. Refer to MASS AIR FLOW SENSOR, CHECKING . Open circuit Output driver-OFF state 480 mSec
  • 2 DCY
P2101 Throttle Actuator Control Motor Circuit Range/Performance -- Check the Intake Air Temperature (IAT) Sensor -G72-. Refer to INTAKE AIR TEMPERATURE SENSOR, CHECKING . Diagnostic signal from throttle valve module-Initial sequence error --- 2 Sec
  • Once per DCY
  • 2 DCY
P2102 Throttle Actuator Control Motor Circuit Low -- Check the Intake Air Temperature (IAT) Sensor -G72-. Refer to INTAKE AIR TEMPERATURE SENSOR, CHECKING . Short to ground Output driver-OFF state 480 mSec 2 DCY
P2103 Throttle Actuator Control Motor Circuit High -- Check the Fuel Temperature Sensor -G81-. Refer to FUEL TEMPERATURE SENSOR, CHECKING . Short to battery positive Output driver-ON state 480 mSec
  • 2 DCY
P2108 Throttle Actuator Control Module Performance -- Check the Fuel Temperature Sensor -G81-. Refer to FUEL TEMPERATURE SENSOR, CHECKING . Diagnostic signal from throttle valve module-Defective state --- 1.5 Sec
  • Continuous
  • 2 DCY
P2195 O2 Sensor Signal Stuck Lean Bank 1 Sensor 1 -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING .
  • Deviation between-> 0.075
  • Actual an model-< -0.075
  • Oxygen concentration-> 0.05
  • (different threshold for each engine operation point)-< -0
  • Oxygen sensor raw signal-200 mV
  • Engine speed-1, 700 - 2, 200 RPM
  • Fuel quantity-8 - 10 mg/stroke
  • Airflow quantity-> 200 - 250 mg/stroke or
  • Engine speed-0 - 32, 767 RPM
  • Fuel quantity-100 - 0.2 mg/stroke
  • Airflow quantity-100 - 32, 767 mg/stroke and
  • LSU heater control-= active
  • Engine operation point-= static
  • LSU heater control- = active
 2 Sec 2 DCY
P2196 O2 Sensor Signal Stuck Rich Bank 1 Sensor 1 -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING .
  • Deviation between-> 0.075
  • Actual an model-< -0.075
  • Oxygen concentration-> 0.05
  • (different threshold for each engine operation point)-< -0
  • Oxygen sensor raw signal-1) 4.77 V 2) 3.2 V
  • Engine speed-1, 700 - 2, 200 RPM
  • Fuel quantity-8 - 10 mg/stroke
  • Airflow quantity-> 200 - 250 mg/stroke or
  • Engine speed-0 - 32, 767 RPM
  • Fuel quantity-100 - 0.2 mg/stroke
  • Airflow quantity-100 - 32, 767 mg/stroke and
  • LSU heater control-= active
  • Engine operation point-= static
  • LSU heater control- = active
 2 Sec 2 DCY
P2237 O2 Sensor Positive Current Control Circuit Bank 1 Sensor 1 Open -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING . Measured oxygen concentration-< 0, 005
  • Calculated oxygen concentration (by airflow quantity and fuel quantity)-> 0.067
  • LSU wires-not otherwise defective
  • LSU heater control-= active
 2 Sec
  • Continuous
  • 2 DCY
P2238 O2 Sensor Positive Current Control Circuit Bank 1 Sensor 1 Low -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING . Adjustment voltage (IP)-voltage: < 2 V, < 1.75 V,< 0.3 V --- 2 Sec
  • Continuous
  • 2 DCY
P2239 O2 Sensor Positive Current Control Circuit Bank 1 Sensor 1 High -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING . Adjustment voltage (IP)-voltage: > 3 V, > 4 V,>1.5 V --- 2 Sec
  • Continuous
  • 2 DCY
P2243 O2 Sensor Reference Voltage Circuit Bank 2 Sensor 1 Open -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING .
  • LSU internal resistance-> 1, 800 Ω
  • and Oxygen sensor raw-> 4.68 V
  • Signal-< 0.3 V
 LSU heater control heater final stage-active for 5 Sec no fault 2 Sec
  • Continuous
  • 2 DCY
P2245 O2 Sensor Reference Voltage Circuit Bank 1 Sensor 1 Low -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING .
  • Nernst voltage (UN)-voltage: < 2 V, < 1.75 V,< 0.3 V
 --- 2 Sec
  • Continuous
  • 2 DCY
P2246 O2 Sensor Reference Voltage Circuit Bank 1 Sensor 1 High -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING .
  • Nernst voltage (UN)-voltage: > 3 V, > 4 V,>1.5 V
 --- 2 Sec
  • Continuous
  • 2 DCY
P2251 O2 Sensor Negative Current Control Circuit Bank 1 Sensor 1 Open -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING .
  • LSU internal resistance-> 1, 800 Ω
  • and Oxygen sensor raw-> 1461 mV
  • Signal-< 1514 mV
 LSU heater control heater final stage-active for 5 Sec no fault 2 Sec
  • Continuous
  • 2 DCY
P2252 O2 Sensor Negative Current Control Circuit Bank 1 Sensor 1 Low -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING . Virtual mass (VM)-voltage: < 2 V, < 1.75 V,< 0.3 V --- 2 Sec
  • Continuous
  • 2 DCY
P2253 O2 Sensor Negative Current Control Circuit Bank 1 Sensor 1 High -- Check Heated Oxygen Sensor (HO2S) -G39-. Refer to HEATED OXYGEN SENSOR, CHECKING . Virtual mass (VM)-voltage: > 3 V, > 4 V,>1.5 V --- 2 Sec
  • Continuous
  • 2 DCY
P2413 Exhaust Gas Recirculation System Performance -- Check EGR Vacuum Regulator Solenoid Valve -N18-. Refer to EXHAUST GAS RECIRCULATION VACUUM REGULATOR SOLENOID VALVE, CHECKING .-- Check theExhaust Gas Recirculation (EGR) Valve --. Refer to EXHAUST GAS RECIRCULATION VACUUM REGULATOR SOLENOID VALVE, CHECKING
  • Position sensor signal-4.5 V
  • Position sensor signal 0.45 V
 --- 600 mSec
  • Continuous
  • 2 DCY
P2425 Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve Open -- Check the Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve -N345-. Refer to EXHAUST GAS RECIRCULATION COOLER SWITCH-OVER VALVE, CHECKING Open circuit Output driver = OFF state 480 mSec
  • Continuous
  • 2 DCY
P2426 Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve -- Check the Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve -N345-. Refer to EXHAUST GAS RECIRCULATION COOLER SWITCH-OVER VALVE, CHECKING Short to ground Output driver = OFF state 480 mSec
  • Continuous
  • 2 DCY
P2427 Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve Short to B+ -- Check the Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve -N345-. Refer to EXHAUST GAS RECIRCULATION COOLER SWITCH-OVER VALVE, CHECKING Short to battery plus Output driver- = ON state 480 mSec
  • Continuous
  • 2 DCY
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