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Sae P2XXX Diagnostic Trouble Codes

Fuel and air ratio 

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P2101 Throttle Actuator Control Motor Circuit Range/Performance -- Refer to THROTTLE VALVE CONTROL MODULE J338, CHECKING .
  • Max. current >80%
  • Throttle valve angle deviation-Max 4-50%
  • ECM power stage-Failure
 0.5 Sec
  • 2 DCY
P2122 Throttle/Pedal Position Sensor/Switch D Circuit Low Input -- Refer to THROTTLE POSITION SENSOR G79 AND ACCELERATOR PEDAL POSITION SENSOR 2 G185, CHECKING .-- CAN receive data check.
  • (ULEV) Lower threshold-<0.63 V
  • (LEV) Lower threshold-<0.63 V
  • Detection of error
  • Sensor voltage 2, >1.11 V
  • Sensor voltage 2, >1.15 V
  • CAN bus, Active
  • ECU communication, Active
  • ECU data update, Active
 0.5 Sec 250 ms
  • 2 DCY
P2123 Throttle/Pedal Position Sensor/Switch D Circuit High Input -- Refer to THROTTLE POSITION SENSOR G79 AND ACCELERATOR PEDAL POSITION SENSOR 2 G185, CHECKING . Upper threshold > 4.82 V - 0.5 Sec
  • 2 DCY
P2127 Throttle/Pedal Position Sensor/Switch E Circuit Low Input -- Refer to THROTTLE POSITION SENSOR G79 AND ACCELERATOR PEDAL POSITION SENSOR 2 G185, CHECKING .
  • (ULEV) Lower threshold-<0.43 V
  • (LEV) Lower threshold-<0.33 V
  • Sensor voltage 2, >1.11 V
  • Sensor voltage 2, >1.15 V
 0.5 Sec
  • 2 DCY
P2128 Throttle/Pedal Position Sensor/Switch E Circuit High Input -- Refer to THROTTLE POSITION SENSOR G79 AND ACCELERATOR PEDAL POSITION SENSOR 2 G185, CHECKING . Upper threshold > 4.94 V - 0.5 Sec
  • 2 DCY
P2138 Throttle/Pedal Position Sensor/Switch D / E Voltage Correlation -- Refer to THROTTLE POSITION SENSOR G79 AND ACCELERATOR PEDAL POSITION SENSOR 2 G185, CHECKING .
  • (ULEV) Comparison signal, sensor 1 vs sensor 2 difference>0.21 - 1.11 V
  • (LEV) Comparison signal, sensor 1 vs sensor 2 difference >0.21 - 1.23 Volts
  • Sensor voltage 1, 2 >0.84 V
  • Sensor voltage 1, 2 >0.86 V
 0.5 Sec
  • 2 DCY
P2181 Cooling System Performance -- Refer to ENGINE COOLANT TEMPERATURE SENSOR G62, CHECKING .-- Check the Coolant Pump -V50- Coolant After-Run Pump, Checking -- Check the Coolant Thermostat. [For engine(s) AWP, AWV] Cooling System Components Assembly Overview, Engine Side or to [For engine(s) APH] Cooling System Components Assembly Overview, Engine Side .
  • Engine coolant temperature-<80.25° C
  • Sufficient mass air-8 - 18 kg
  • ECT, >10 K
  • Sufficient mass air 4 - 11.5 kg
  • Engine start temperature, 5 - 30° C
  • Average air mass range, >18 - 60 kg/h
  • Average vehicle speed, 9 - 80 mph
  • Total time fuel cut off, <100 sec.
  • Engine start temperature, 5 - 30° C
  • Average air mass range, >24 - 62 kg/h
  • Average vehicle speed, 22 - 74 mph
  • Total time fuel cut off, <100 sec.
  • Delta ambient pressure per monitor, <15hPa
 -
  • Once/DCY
  • 2 DCY

Ignition System 

Additional emission regulations 

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P2400 Evaporative Emission System Leak Detection Pump Control Circuit/Open -- Refer to LEAK DETECTION PUMP V144, CHECKING . Open circuit 2.25 V
  • LDP, Commanded off
  • Engine speed, 80 RPM
 0.2 Sec
  • 2 DCY
P2401 Evaporative Emission System Leak Detection Pump Control Circuit Low -- Refer to LEAK DETECTION PUMP V144, CHECKING . Short to ground <2.25 - 3.01 V
  • LDP, Commanded off
  • Engine speed, 80 RPM
 0.2 Sec
  • 2 DCY
P2402 Evaporative Emission System Leak Detection Pump Control Circuit High -- Refer to LEAK DETECTION PUMP V144, CHECKING . Short to battery + >3.01 A
  • LDP, Commanded on
  • Engine speed, 80 RPM
 0.2 Sec
  • 2 DCY
P2403 Evaporative Emission System Leak Detection Pump Sense Circuit/Open -- Refer to LEAK DETECTION PUMP V144, CHECKING . Contact unable to CLOSE-Signal always low
  • LDP, Commanded off
  • EVAP purge valve, Ready, No fault
 0.2 Sec
  • 2 DCY
P2404 Evaporative Emission System Leak Detection Pump Sense Range/Performance -- Refer to LEAK DETECTION PUMP V144, CHECKING . Contact unable to OPEN-Signal always high
  • LDP, Commanded off
  • EVAP purge valve, Ready, No fault
 0.2 Sec
  • 2 DCY
P2422 Evaporative Emission System Vent Valve Stuck Closed -- Refer to LEAK DETECTION PUMP V144, CHECKING . 2nd leak check while valve is open <2.3 - 2.7 sec.
  • Purge valve, OPEN
  • LDP-Activated
  • Altitude-<2.500 m
  • IAT, >5° C
  • Ambient pressure, >6 hPa
  • Reduction of intake air start: no deep downhill driving-vehicle speed at low load (<2%)
  • Time after engine start, 255 Sec
  • Intake manifold low pressure, >150 hPa
  • Engine temp, 5 - <115° C
  • Restart ECT difference, >50° C
  • Vehicle speed, >6 mph
 240 Sec
  • 2 DCY

O2MP Transmission

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illum
P2637 Torque management. Feedback Signal "A" -- CAN receive data check.AUTOMATIC TRANSMISSION, SERVICING Detection of error
  • CAN bus, Active
  • ECU communication, Active
  • ECU data update, Active
 250 ms -
P2716 Pressure Control Solenoid "D" Electrical -- Input AD value check in every linear solenoid. Linear solenoid feedback current check AUTOMATIC TRANSMISSION, SERVICING
  • Detection of wrong input AD value, Feedback current > 1333 mA (AD value >1000) for more than 100 ms OR Feedback current <23 mA (AD value < 15) for more than 100 ms
  • Comparison of target current and feedback current
 -
  • Main Solenoid, ON
  • Linear feedback current, >23 mA (AD:15) < 1333 mA (AD:1000)
 500 ms. 2 Times Continuous
P2725 Pressure Control Solenoid "E" Electrical -- Input AD value check in every linear solenoid. Linear solenoid feedback current check AUTOMATIC TRANSMISSION, SERVICING
  • Detection of wrong input AD value, Feedback current > 1333 mA (AD value >1000) for more than 100 ms OR Feedback current <23 mA (AD value < 15) for more than 100 ms
  • Comparison of target current and feedback current
 -
  • Main Solenoid, ON
  • Linear feedback current, >23 mA (AD:15) < 1333 mA (AD:1000)
 500 ms. 2 Times Continuous
P2734 Pressure Control Solenoid "F" Electrical -- Input AD value check in every linear solenoid. Linear solenoid feedback current check AUTOMATIC TRANSMISSION, SERVICING
  • Detection of wrong input AD value, Feedback current > 1333 mA (AD value >1000) for more than 100 ms OR Feedback current <23 mA (AD value < 15) for more than 100 ms
  • Comparison of target current and feedback current
 -
  • Main Solenoid, ON
  • Linear feedback current, >23 mA (AD:15) < 1333 mA (AD:1000)
 500 ms. 2 Times Continuous
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