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Sae P2XXX Diagnostic Trouble Codes

For additional monitor strategy information.

Fuel and air mixture, additional emissions regulations 

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL, Illumination
P2088 'A Camshaft Position Actuator Control Circuit Low Bank 1 -- Check the Camshaft Adjustment Valve 1 -N205-. Refer to CAMSHAFT ADJUSTMENT VALVE 1, CHECKING . Signal voltage Camshaft valve, commanded off
  • Engine speed, > 80 RPM
 5 Sec
  • Continuous
  • 2 DCY
P2089 'A Camshaft Position Actuator Control Circuit High Bank 1 -- Check the Camshaft Adjustment Valve 1 -N205-. Refer to CAMSHAFT ADJUSTMENT VALVE 1, CHECKING . Signal voltage Camshaft valve, commanded on
  • Engine speed, > 80 RPM
 5 Sec
  • Continuous
  • 2 DCY
P2096 Post Catalyst Fuel trim System Too Lean Bank 1 -- Check oxygen sensor -- before catalytic converter OXYGEN SENSOR HEATER Z19, CHECKING .-- Check Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING . ULEVII I-portion of 2nd Lambda control < 0.025
  • Lambda control, closed loop
  • 2nd Lambda control, P part-closed loop
  • Modeled catalyst temp. 400 - 1, 000° C
  • Delta engine load < 9% NWU
  • Fuel cut off not active
  • Mass exhaust gas flow 18 - 150 Kg/h
  • Mass exhaust gas flow integral 110g
  • Number of integrals 7
  • O2S rear 1, ready no fault
  • O2S heater rear 1, active, no fault
  • Catalyst heating not active
  • Air injection not active
 100 Sec
  • Multiple
  • 2 DCY
P2096 Post Catalyst Fuel trim System Too Lean Bank 1 -- Check oxygen sensor -- before catalytic converter OXYGEN SENSOR HEATER Z19, CHECKING .-- Check Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING . SULEV Delta lambda of 2nd, >0.05-
  • Lambda control, closed loop
  • 2nd Lambda control, P part-closed loop
  • Modeled catalyst temp. 400 - 1, 000° C
  • Delta engine load < 9% NWU
  • Fuel cut off not active
  • Mass exhaust gas flow 18 - 150 Kg/h
  • Mass exhaust gas flow integral 110g
  • Number of integrals 7
  • O2S rear 1, ready
  • O2S heater rear 1, active, no fault
  • Catalyst heating not active
  • Air injection not active
 100 Sec
  • Multiple
  • 2 DCY
P2097 Post Catalyst Fuel Trim System Too Rich, Bank 1 -- Check oxygen sensor -- before catalytic converter OXYGEN SENSOR HEATER Z19, CHECKING .-- Check Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING . ULEVII Lambda control loop, > 0.025
  • Lambda control, closed loop
  • 2nd Lambda control, P part, closed loop
  • Modeled catalyst temp. 400 - 1, 000° C
  • Delta engine load < 9% NWU
  • Fuel cut off not active
  • Mass exhaust gas flow 18 - 150 Kg/h
  • Mass exhaust gas flow integral 110g
  • Number of integrals 7
  • O2S rear 1 ready, no fault
  • O2S heater rear 1, active, no fault
  • Catalyst heating not active
  • Air injection, not active
 100 Sec
  • Multiple
  • 2 DCY
P2097 Post Catalyst Fuel Trim System Too Rich, Bank 1 -- Check oxygen sensor -- before catalytic converter OXYGEN SENSOR HEATER Z19, CHECKING .-- Check Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING . SULEV Lambda control loop, < 0.005
  • Lambda control, closed loop
  • 2nd Lambda control, P part, closed loop
  • Modeled catalyst temp. 400 - 1, 000° C
  • Delta engine load < 9% NWU
  • Fuel cut off not active
  • Mass exhaust gas flow 18 - 150 Kg/h
  • Mass exhaust gas flow integral 110g
  • Number of integrals 7
  • O2S rear 1 ready
  • O2S heater rear 1, active, no fault
  • Catalyst heating not active
  • Air injection, not active
 100 Sec
  • Multiple
  • 2 DCY
P2101 Throttle Actuator Control Motor Circuit Range / Performance -- Check Throttle Valve Control Module -J338-. Refer to THROTTLE VALVE CONTROL MODULE, CHECKING . Duty cycle, > 80% AND ECM power stage, no failure Deviation throttle valve angles vs. Calculated value, > 4-50%
  • Duty cycle, > 80% AND ECM power stage, no failure
  • Deviation throttle valve angles vs. Calculated value, > 4-50%
 --- 0.6 Sec
  • 0.5 Sec
  • Continuous
  • 2 DCY
P2106 Throttle Actuator Control System, Forced Limited Power -- Check Throttle Valve Control Module -J338-. Refer to THROTTLE VALVE CONTROL MODULE, CHECKING . Duty cycle, > 80% AND ECM power stage, no failure --- 5 Sec
  • Multiple
  • 2 DCY
P2108 Throttle Actuator Control Module Performance -- Check Throttle Valve Control Module -J338-. Refer to THROTTLE VALVE CONTROL MODULE, CHECKING . Time to open over reference point + 12%, > 0.14 Sec AND
  • Time to close below reference point + 3%, > 0.56 Sec
  • Ignition on
  • ECT > 5.3° C
  • Engine speed, 0 RPM
  • IAT, > 5.3° C
  • Vehicle speed, 0 Km/h
 5 Sec
  • Multiple
  • 2 DCY
P2122 Throttle / Pedal Position Sensor Switch D Circuit Low Input -- Check Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-. Refer to THROTTLE POSITION SENSOR AND ACCELERATOR PEDAL POSITION SENSOR 2, CHECKING . Signal voltage < 0.6 V Signal voltage sensor 2 > 1.11 V 5 Sec
  • Continuous
  • 2 DCY
P2123 Throttle / Pedal Position Sensor Switch D Circuit High Input -- Check Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-. Refer to THROTTLE POSITION SENSOR AND ACCELERATOR PEDAL POSITION SENSOR 2, CHECKING . Signal voltage > 4.82 V Signal voltage sensor 2 > 1.11 V 5 Sec
  • Continuous
  • 2 DCY
P2127 Throttle / Pedal Position Sensor Switch E Circuit Low Input -- Check Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-. Refer to THROTTLE POSITION SENSOR AND ACCELERATOR PEDAL POSITION SENSOR 2, CHECKING . Signal voltage < 0.33 V Signal voltage sensor 1 > 1.15 V 5 Sec
  • Continuous
  • 2 DCY
P2128 Throttle / Pedal Position Sensor Switch E Circuit High Input -- Check Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-. Refer to THROTTLE POSITION SENSOR AND ACCELERATOR PEDAL POSITION SENSOR 2, CHECKING . Signal voltage > 4.94 V Signal voltage sensor 1 > 1.15 V 5 Sec
  • Continuous
  • 2 DCY
P2138 Throttle / Pedal Position Sensor Switch D / E Voltage Correlation -- Check Throttle Position (TP) Sensor -G79- /Accelerator Pedal Position Sensor 2 -G185-. Refer to THROTTLE POSITION SENSOR AND ACCELERATOR PEDAL POSITION SENSOR 2, CHECKING . Signal voltage sensor vs sensor 2 > 0.21-1.1 V Signal voltage sensor 1 > 0.86 V
  • sensor 2 > 0.86 V
 5 Sec
  • Continuous
  • 2 DCY

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, Illumination
P2181 Cooling System Performance -- Check Engine Coolant Temperature (ECT) Sensor -G62- ENGINE COOLANT TEMPERATURE SENSOR G62, CHECKING .
  • Cooling system temp. too low after a sufficient air mass flow integral, 80° C
  • Beginning of air mass integration when engine temp. is, 39.8° C
  • ECT at start -10 - 60° C
  • Integrated air mass depending on engine temp. at start and intake air temp.
  • IAT -10 - 60° C
  • NOT:
  • Fuel cut off
  • OR
  • engine load < 15 (17)%
  • OR
  • engine load > 95%
  • Depending on temp. at engine start and min. observed IAT for longer than 120 - 180 Sec
  • Depending on temp. at engine start and min. observed IAT for longer than 0.9 - 2.0 Kg
  • Time of fault decision:
  • Average air mass flow 30 - 280 Kg/h
  • Average vehicle speed 25 - 120 Km/h
 ---
  • Once/DCY
  • 2 DCY
P2195 O2 Sensor Signal Biased / Stuck, Lean Bank 1, Sensor 1 -- Check oxygen sensor -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING . LSU Lean, LSF Rich
  • Lambda value, > 1.08
  • and
  • O2S signal rear, > 0.748 V
  • Lambda control, at Max. value
  • Exhaust mass air integral, > 0.2 kg
LSU Lambda 1, LSF Rich
  • O2S rear > 0.748 V
  • Lambda control, not at Max. value
  • P portion of 2nd Lambda control loop > 0.01
  • AND
  • P portion and I portion of 2nd Lambda control loop trim too rich
  • Lambda control closed loop
  • O2S rear ready
  • Lambda control closed loop
  • O2S rear ready
  • Lambda control post catalyst, closed loop
  • O2S rear signal check ready
 200 Sec Multiple 2 DCY
P2196 O2 Sensor Signal Biased / Stuck Rich - Bank 1, Sensor 1 -- Check oxygen sensor -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING . LSU rich, LSU Lean
  • Lambda value < 0.92
  • AND
  • O2S signal rear < 0.1523 V
  • Lambda control at Min. value
  • Exhaust mass air integral > 0.2 Kg
LSU Lambda 1 LSU Lean
  • O2S signal rear < 0.1523 V
  • Lambda control, not at min. value
  • P portion of 2nd Lambda control loop > 0.01
  • AND
  • P portion and I portion of 2nd Lambda control loop, trim to rich
  • Lambda control, closed loop
  • O2S rear, ready
Lambda control, closed loop O2S rear, ready Lambda control post catalyst, closed loop O2S rear signal check, ready		 200 Sec Continuous 2 DCY
P2199 Intake Air Temperature Sensor 1 / 2 Correlation -- Check Intake Air Temperature (IAT) Sensor 2 -G299-. Refer to INTAKE AIR TEMPERATURE SENSOR 2, CHECKING . > 25° C Cold start, detected 100 Sec
  • Once
  • 2 DCY
P2231 O2 Sensor Signal Circuit Shorted to Heater Circuit (Bank 1 Sensor 1) -- Check oxygen sensor -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING . Delta O2S signal front, > 190 A
  • Modeled exhaust gas temp. < 800° C
  • Heater duty cycle 20 - 80
  • Heater control, closed loop
  • O2S ceramic temp. > 715° C
  • Engine speed, < 2, 160 RPM
 15 Sec
  • 2 DCY
P2237 O2 Sensor Positive Current Control Circuit / Open (Bank 1 Sensor 1) -- Check oxygen sensor -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING .
  • Fuel cut off > 3 Sec
  • O2S signal front, < 1.7 V
  • O2S signal front, 1.49-1.52 V
  • Delta Lambda controller > 0.1
  • O2S ceramic temp. 685° C
  • Electrical adjustment not active
  • Heater control closed loop
  • Evap purge valve ready, no fault
  • O2S ceramic temp. 685° C
  • Heater control closed loop
  • Lambda modulation >0.015
 30 Sec
  • Continuous
  • 2 DCY
P2243 O2 Sensor Reference Voltage Circuit / Open (Bank 1, Sensor 1 -- Check oxygen sensor -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING .
  • O2S signal front, > 4.7 V AND Internal resistance > 1, 000 Ω
  • OR
  • O2S signal front< 0.2 V
  • AND
  • internal resistance > 1, 000Ω
 Heater control, Active 40 Sec
  • Multiple
  • 2 DCY
P2251 O2 Sensor Negative Current Control Circuit / Open (Bank 1 Sensor 1) -- Check oxygen sensor -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING . O2S signal front, 1.47 - 1.53 V AND Internal resistance > 1, 000Ω
  • Heater control active
  • Modeled gas temp. < 750° C
  • No fuel cut off, > 2 Seconds
 60 Sec
  • Multiple
  • 2 DCY
P2257 Secondary Air Injection System Control 'A Circuit Low -- Check the Secondary Air Injection (AIR) Pump Relay -J299-. Refer to SECONDARY AIR INJECTION PUMP RELAY, CHECKING . Signal voltage < 3.0 V Pump relay, commanded off. Engine speed > 80 RPM 0.5 Sec
  • Continuous
  • 2 DCY
P2258 Secondary Air Injection System Control 'A Circuit High -- Check the Secondary Air Injection (AIR) Pump Relay -J299-. Refer to SECONDARY AIR INJECTION PUMP RELAY, CHECKING . Signal current, 0.6 - 1.2 A Pump relay commanded on. Engine speed > 80 RPM 0.5 Sec
  • Continuous
  • 2 DVY
P2270 O2 Sensor Signal Stuck Lean Bank 1 Sensor 2 -- Check Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING . O2S rear signal not oscillating at reference, < 420 - 600 mV
  • Mass air flow 30 - 120 Kg/h
  • O2S rear readiness, > 10 Sec
  • Modeled exhaust gas temp. > 350° C
  • 2nd Lambda control, closed loop
 135 Sec
  • Once every DCY
  • 2 DCY
P2271 O2 Sensor Signal Stuck Rich Bank 1 Sensor 2 -- Check Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-. Refer to OXYGEN SENSOR BEHIND THREE WAY CATALYTIC CONVERTER, CHECKING . O2S rear signal not oscillating at reference, > 426 - 600 mV
  • Mass air flow 30 - 120 Kg/h
  • O2S rear readiness, > 10 Sec
  • Modeled exhaust gas temp. > 350° C
  • 2nd Lambda control, closed loop
  • Fuel cut off > 3 Sec
 135 Sec
  • Once every DCY
  • 2 DCY
P2274 O2 Sensor Signal Stuck Lean (Bank 1, Sensor 3) -- Check Oxygen Sensor (O2S (in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-. Refer to OXYGEN SENSOR HEATER Z29, CHECKING . O2S rear signal not oscillating at reference,<420-600 mV
  • Mass air flow, 30-120 Kg/h
  • O2S rear readiness, >30 seconds
  • Modeled exhaust gas temp. >350° C
  • 2nd lambda control, closed loop
 215 Sec
  • Once every DCY
  • 2 DCY
P2275 O2 Sensor Signal Stuck Rich (Bank 1, Sensor 3) -- Check Oxygen Sensor (O2S (in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-. Refer to OXYGEN SENSOR HEATER Z29, CHECKING . O2S rear signal not oscillating at reference,> 640 mV
  • Mass air flow, 22-120 Kg/h
  • O2S rear readiness, >15 seconds
  • Modeled exhaust gas temp. >400° C
  • Fuel cut off, >3 Sec
 215 Sec
  • Once every DCY
  • 2 DCY
P2279 Intake Air System Leak -- Check the Intake Air System for leaks. Refer to INTAKE SYSTEM, CHECKING FOR LEAKS . Diff. Modeled manifold pressure vs. measured, > 115 hPa
  • Ratio manifold pressure to ambient pressure, 0.25 - 0.45
  • Evap purge valve, closed
  • Time after engine start 5.0 Sec
  • Engine speed 600 - 4, 000 RPM
  • Manifold pressure sensor, no fault
  • MAF, ready, no fault
 20 Sec
  • Multiple
  • 2 DCY

Ignition System 

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL, Illumination
P2310 Ignition Coil D Primary Control Circuit High -- Check Ignition Coil with Power Output Stage -- IGNITION COIL WITH POWER OUTPUT STAGE, CHECKING . Signal voltage >5.2-6.0 V Engine speed <5000 RPM 0.5 Sec.
  • Continuous
  • 2 DCY

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, Illumination
P2400 Evaporative Emission System Leak Detection Pump Control Circuit/Open -- Check Leak Detection Pump (LDP) -V144-.LEAK DETECTION PUMP, CHECKING -- Refer to EVAP System, Checking for Leaks EVAP SYSTEM, CHECKING FOR LEAKS . Signal voltage 2.25 - 3.01 V
  • LDP Commanded off
  • Engine speed > 80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P2401 Evaporative Emission System Leak Detection Pump Control Circuit Low -- Check Leak Detection Pump (LDP) -V144-.LEAK DETECTION PUMP, CHECKING -- Refer to EVAP System, Checking for Leaks EVAP SYSTEM, CHECKING FOR LEAKS . Signal voltage < 3.0 V
  • LDP Commanded off
  • Engine speed > 80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P2402 Evaporative Emission System Leak Detection Pump Control Circuit High -- Check Leak Detection Pump (LDP) -V144-.LEAK DETECTION PUMP, CHECKING -- Refer to EVAP System, Checking for Leaks EVAP SYSTEM, CHECKING FOR LEAKS . Signal voltage > 3.0 V
  • LDP Commanded on
  • Engine speed > 80 RPM
 0.5 Sec
  • Continuous
  • 2 DCY
P2403 Evaporative Emission System Leak Detection Pump Sense Circuit / Open -- Check Leak Detection Pump (LDP) -V144-.LEAK DETECTION PUMP, CHECKING -- Refer to EVAP System, Checking for Leaks EVAP SYSTEM, CHECKING FOR LEAKS . Low signal voltage > 0.5 V
  • LDP Commanded off
  • Altitude < 2, 700 m
  • IAT > 4.5 - 95° C
  • Time after engine start 5 - 1, 200 Sec
  • ECT 4.5 - 105- 115° C
  • Restart temp. difference > 52 K
  • Vehicle speed 0 - 140 Km/h
  • Selected gear any drive gear
  • Evap purge valve ready, no fault
  • Integrated purge flow, > 5 g
 0.5 Sec
  • Once every DCY
  • 2 DCY
P2404 Evaporative Emission System Leak Detection Pump Sense Circuit Range / Performance -- Check Leak Detection Pump (LDP) -V144-.LEAK DETECTION PUMP, CHECKING -- Refer to EVAP System, Checking for Leaks EVAP SYSTEM, CHECKING FOR LEAKS . High signal voltage, > 12.5 V. Number of checks, 30
  • Evap purge valve closed
  • LDP, Commanded on
  • Altitude,< 2, 700 m
  • IAT, > 4.5 - 105° C
  • Time after engine start 5 - 1, 200 Sec
  • Intake manifold vacuum > 200 hPa
  • IAT drop after engine start, < 7k
  • ECT, 4.5 - 105° C
  • Restart temp. difference, > 52 K
  • Vehicle speed, 30 MPH
  • Selected gear, Any drive gear
 0.5 Sec
  • Once every DCY
  • 2 DCY
P2414 O2S Sensor Exhaust Sample Error Bank 1, Sensor 1 -- Check oxygen sensors -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING .
  • Signal voltage, 3.7-4.8 V
  • O2S ceramic temperature, > 675 °C
  • Lambda set value, < 1.6
  • Fuel cut off not active
  • If low fuel signal is present, then wait > 600 Sec
  • Heater control, closed
  • Heater resistance, < 130 Ω
  • SAI, not active
 15 Sec
  • Multiple
  • 2 DCY
P2626 O2 Sensor Pumping Current Trim Circuit / Open Bank 1 Sensor 1 -- Check oxygen sensors -- before catalytic converter HEATED OXYGEN SENSOR, CHECKING . O2S signal front, > 4.8 V
  • O2S ceramic temperature, > 685° C
  • Modeled exhaust gas temp. < 750° C
  • Fuel cut off active
  • If low fuel signal wait, > 600 Sec
  • Heater control closed loop
 3 Sec
  • Multiple
  • 2 DCY

09G Transmission 

DTC Error Message Diagnostic Procedure Malfunction Criteria and Threshold Value Secondary Parameters with Enable Conditions Monitoring Time Length Frequency of checks, MIL Illumination
P2637 Engine torque signal A -- Check the CAN-Bus terminal resistance. Refer to TRANSMISSION CONTROL MODULE CAN-BUS TERMINAL RESISTANCE, CHECKING . Detection of error signal (0xFF)
  • CAN bus, active
  • ECU communication, active
  • ECU data update, active
 250 ms ---
P2716 Pressure Control Solenoid D Electrical -- Check the Solenoid Valves --. Refer to SOLENOID VALVES IN VALVE BODY, CHECKING . Detection of wrong input AD value, Feedback current < 23 mA (AD value < 15) for more than 100 ms Output sensor, No failure decision for output sensor no pulse 500 ms ---
P2725 Pressure Control Solenoid E Electrical -- Check the Solenoid Valves --. Refer to SOLENOID VALVES IN VALVE BODY, CHECKING . Detection of wrong input AD value, Feedback current < 23 mA (AD value < 15) for more than 100 ms Output sensor, No failure decision for output sensor no pulse 500 ms ---
P2734 Pressure Control Solenoid F Electrical -- Check the Solenoid Valves --. Refer to SOLENOID VALVES IN VALVE BODY, CHECKING . Detection of wrong input AD value, Feedback current < 23 mA (AD value < 15) for more than 100 ms Output sensor, No failure decision for output sensor no pulse 500 ms ---
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