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SAE P2xxx-DTCs

Fuel and air ratios

FUEL AND AIR RATIOS SPECIFICATION (P2101-P2138)

SAE-DTC	DTC text	Corrective action
P2101	Throttle Actuator Control Motor Circuit Range/Performance	Check Throttle Valve Control Module -J338-, see THROTTLE VALVE CONTROL MODULE, CHECKING
P2106	Throttle Actuator Control System - Forced Limited Power
P2122	Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input	Check Throttle Position (TP) Sensor -G79- and Sender - 2- for accelerator pedal position -G185-, see THROTTLE POSITION (TP) SENSOR, CHECKING
P2123	Throttle/Pedal Position Sensor/Switch "D" Circuit High Input
P2127	Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input
P2128	Throttle/Pedal Position Sensor/Switch "E" Circuit High Input
P2133	Throttle/Pedal Position Sensor/Switch "F" Circuit High Input
P2138	Throttle/Pedal Position Sensor/Switch "D" / "E" Voltage Correlation

FUEL AND AIR RATIOS SPECIFICATION (P2181-P2279)

SAE-DTC	DTC text	Corrective action
P2181	Cooling System Performance	Check Engine Coolant Temperature (ECT) Sensor -G62-, see ENGINE COOLANT TEMPERATURE (ECT) SENSOR, CHECKING Check coolant regulator: See COOLING SYSTEM COMPONENTS (ENGINE SIDE)
P2279	Intake Air System Leak	Check intake air system for leaks (false air), see CHECKING INTAKE SYSTEM FOR LEAKS (UNMETERED AIR)

Additional exhaust regulation

ADDITIONAL EXHAUST REGULATION SPECIFICATION (P2400-P2404)

SAE-DTC	DTC text	Corrective action
P2400	Evaporative Emission System Leak Detection Pump Control Circuit/Open	Check Leak detection pump (LDP) -V144-, see CHECK LEAK DETECTION PUMP (LDP)
P2401	Evaporative Emission System Leak Detection Pump Control Circuit Low	EVAP canister system, check for proper seal, see EVAP CANISTER SYSTEM, CHECKING FOR PROPER SEAL
P2402	Evaporative Emission System Leak Detection Pump Control Circuit High
P2403	Evaporative Emission System Leak Detection Pump Sense Circuit/Open
P2404	Evaporative Emission System Leak Detection Pump Sense Circuit Range/Performance