Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSVOLKSWAGEN2002GOLF GLS, 2.0 K, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 91 (2.8L & 3.2L - GENERIC SCAN TOOL, ENGINE CODE(S): AFP, BDF, BJS [A4 PLATFORM] (28 IGNITION/GLOW PLUG SYSTEM - ST GENERIC SCAN TOOL))ST GENERIC SCAN TOOLDTC TABLESSAE P2XXX-DTCS

2002 Volkswagen Golf GLS, 2.0 K, Standard

SAE P2xxx-DTCs

2002 Volkswagen Golf GLS, 2.0 K, StandardSECTION SAE P2xxx-DTCs

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen R32, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, and 2003 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

Fuel and air ratios and additional emission regulations

SAE- DTC	DTC text	Corrective action
P2090	"B" Camshaft Position Actuator Control Circuit Low Bank 1	Check Camshaft Adjustment Valve 1 (exhaust) -N318-. Refer to Valves for camshaft adjustment (vehicles with engine codes BDF and BJS), checking
P2091	"B" Camshaft Position Actuator Control Circuit High Bank 1
P2096	Post Catalyst Fuel Trim System Too Lean Bank 1	Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking
P2097	Post Catalyst Fuel Trim System Too Rich Bank 1	Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking

Fuel and air ratios

SAE- DTC	DTC text	Corrective action
P2101	Throttle Actuator Control Motor Circuit Range/Performance	Check Throttle Valve Control Module -J338-. Refer to 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-. Refer to 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
P2138	Throttle/Pedal Position Sensor/Switch "D" / "E" Voltage Correlation

SAE-
DTC

DTC text

Corrective action

P2177

System Too Lean Off Idle Bank 1

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

Check Fuel Pump (FP) -G6-. Refer to Fuel Pump (FP), checking

Check exhaust system for proper seal. Refer to Exhaust system components, removing and installing , removing and installing exhaust system components

Check Secondary Air Injection (AIR) system for proper seal. Refer to Secondary Air Injection (AIR) system, checking for proper seal

Check vacuum lines for leaks

SAE-
DTC

DTC text

Corrective action

P2178

System Too Rich Off Idle Bank 1

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking

Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking

Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to Evaporative Emission (EVAP) canister purge regulator valve 1, checking

Vehicles with engine code BJS:

Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-. Refer to Evaporative Emission (EVAP) canister purge solenoid valve 2 (vehicles with engine code BJS), checking

SAE-
DTC

DTC text

Corrective action

P2179

System Too Lean Off Idle Bank 2

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

Check Fuel Pump (FP) -G6-. Refer to Fuel Pump (FP), checking

Check exhaust system for proper seal. Refer to Exhaust system components, removing and installing , removing and installing exhaust system components

Check Secondary Air Injection (AIR) system for proper seal. Refer to Secondary Air Injection (AIR) system, checking for proper seal

Check vacuum lines for leaks

SAE-
DTC

DTC text

Corrective action

P2180

System Too Rich Off Idle Bank 2

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking

Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking

Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to Evaporative Emission (EVAP) canister purge regulator valve 1, checking

Vehicles with engine code BJS:

Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-. Refer to Evaporative Emission (EVAP) canister purge solenoid valve 2 (vehicles with engine code BJS), checking

P2181

Cooling System Performance

Check Engine Coolant Temperature (ECT) Sensor -G62-. Refer to Engine Coolant Temperature (ECT) sensor, checking

SAE-
DTC

DTC text

Corrective action

P2187

System Too Lean at Idle Bank 1

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

Check Fuel Pump (FP) -G6-. Refer to Fuel Pump (FP), checking

Check exhaust system for proper seal. Refer to Exhaust system components, removing and installing , removing and installing exhaust system components

Check Secondary Air Injection (AIR) system for proper seal. Refer to Secondary Air Injection (AIR) system, checking for proper seal

Check vacuum lines for leaks

SAE-
DTC

DTC text

Corrective action

P2188

System Too Rich at Idle Bank 1

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking

Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking

Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to Evaporative Emission (EVAP) canister purge regulator valve 1, checking

Vehicles with engine code BJS:

Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-. Refer to Evaporative Emission (EVAP) canister purge solenoid valve 2 (vehicles with engine code BJS), checking

SAE-
DTC

DTC text

Corrective action

P2189

System Too Lean at Idle Bank 2

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

Check Fuel Pump (FP) -G6-. Refer to Fuel Pump (FP), checking

Check exhaust system for proper seal. Refer to Exhaust system components, removing and installing , removing and installing exhaust system components

Check Secondary Air Injection (AIR) system for proper seal. Refer to Secondary Air Injection (AIR) system, checking for proper seal

Check vacuum lines for leaks

SAE-
DTC

DTC text

Corrective action

P2190

System Too Rich at Idle Bank 2

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking

Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking

Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to Evaporative Emission (EVAP) canister purge regulator valve 1, checking

Vehicles with engine code BJS:

Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-. Refer to Evaporative Emission (EVAP) canister purge solenoid valve 2 (vehicles with engine code BJS), checking

SAE-
DTC

DTC text

Corrective action

P2191

System Too Lean at Higher Load Bank 1

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

Check Fuel Pump (FP) -G6-. Refer to Fuel Pump (FP), checking

Check exhaust system for proper seal. Refer to Exhaust system components, removing and installing , removing and installing exhaust system components

Check Secondary Air Injection (AIR) system for proper seal. Refer to Secondary Air Injection (AIR) system, checking for proper seal

Check vacuum lines for leaks

SAE-
DTC

DTC text

Corrective action

P2192

System Too Rich at Higher Load Bank 1

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking

Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking

Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to Evaporative Emission (EVAP) canister purge regulator valve 1, checking

Vehicles with engine code BJS:

Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-. Refer to Evaporative Emission (EVAP) canister purge solenoid valve 2 (vehicles with engine code BJS), checking

SAE-
DTC

DTC text

Corrective action

P2193

System Too Lean at Higher Load Bank 2

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

Check Fuel Pump (FP) -G6-. Refer to Fuel Pump (FP), checking

Check exhaust system for proper seal. Refer to Exhaust system components, removing and installing , removing and installing exhaust system components

Check Secondary Air Injection (AIR) system for proper seal. Refer to Secondary Air Injection (AIR) system, checking for proper seal

Check vacuum lines for leaks

SAE-
DTC

DTC text

Corrective action

P2194

System Too Rich at Higher Load Bank 2

Check fuel pressure regulator and residual pressure. Refer to Fuel pressure regulator and residual pressure, checking

Check Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-, Cylinder 5 Fuel Injector -N83-, Cylinder 6 Fuel Injector -N84-. Refer to Fuel injectors, checking

Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking

Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking

Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-. Refer to Evaporative Emission (EVAP) canister purge regulator valve 1, checking

Vehicles with engine code BJS:

Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-. Refer to Evaporative Emission (EVAP) canister purge solenoid valve 2 (vehicles with engine code BJS), checking

Fuel and air ratios

SAE- DTC	DTC text	Corrective action
P2231	O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1	Check oxygen sensor heater for oxygen sensors before catalytic converter. Refer to Oxygen sensor heater for oxygen sensors before catalytic converter, checking Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking
P2234	O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 1
P2237	O2 Sensor Positive Current Control Circuit/Open Bank 1 Sensor 1
P2240	O2 Sensor Positive Current Control Circuit/Open Bank 2 Sensor 1
P2243	O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1
P2247	O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1
P2251	O2 Sensor Negative Current Control Circuit/Open Bank 1 Sensor 1
P2254	O2 Sensor Negative Current Control Circuit/Open Bank 2 Sensor 1

SAE- DTC	DTC text	Corrective action
P2257	Secondary Air Injection System Control "A" Circuit Low	Check activation of Secondary Air Injection (AIR) Pump Relay -J299- according to wiring diagram: Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
P2258	Secondary Air Injection System Control "A" Circuit High
P2270	O2 Sensor Signal Stuck Lean Bank 1 Sensor 2	Check oxygen sensors and oxygen sensor control behind catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation behind catalytic converter, checking
P2271	O2 Sensor Signal Stuck Rich Bank 1 Sensor 2
P2272	O2 Sensor Signal Stuck Lean Bank 2 Sensor 2
P2273	O2 Sensor Signal Stuck Rich Bank 2 Sensor 2
P2279	Intake Air System Leak	Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

Ignition system

SAE- DTC	DTC text	Corrective action
P2336	Cylinder #1 Above Knock Threshold	Check Knock Sensor (KS) 1 -G61- and Knock Sensor (KS) 2 -G66-. Refer to Knock sensors, checking Loosen knock sensor and tighten again to 20 Nm Eliminate abnormal engine noise (components loose, bracket/bolts broken) Change fuel types
P2337	Cylinder #2 Above Knock Threshold
P2338	Cylinder #3 Above Knock Threshold
P2339	Cylinder #4 Above Knock Threshold
P2340	Cylinder #5 Above Knock Threshold
P2341	Cylinder #6 Above Knock Threshold

Additional emission regulations

SAE- DTC	DTC text	Corrective action
P2400	Evaporative Emission System Leak Detection Pump Control Circuit/Open	Check Leak Detection Pump (LDP) -V144-. Refer to Leak Detection Pump (LDP), checking Check EVAP canister system for proper seal. Refer to Evaporative Emission (EVAP) canister system, checking for proper seal
P2401	Evaporative Emission System Leak Detection Pump Control Circuit Low
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
P2422	Evaporative Emission System Vent Valve Stuck Closed	Check Evaporative Emission (EVAP) Canister Purge Solenoid Valve -N115-. Refer to Evaporative Emission (EVAP) canister purge solenoid valve 2 (vehicles with engine code BJS), checking

Control module and output signals

SAE- DTC	DTC text	Corrective action
P2626	O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1	Check oxygen sensors and oxygen sensor control before catalytic converter. Refer to Oxygen sensors and oxygen sensor regulation before catalytic converter, checking
P2629	O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 1
P2637	Torque Management Feedback Signal "A"	Check Mass Air Flow (MAF) Sensor -G70-. Refer to Mass Air Flow (MAF) sensor, checking Check Engine Coolant Temperature (ECT) Sensor -G62-. Refer to Engine Coolant Temperature (ECT) sensor, checking Check Intake Air Temperature (IAT) Sensor -G42-. Refer to Intake Air Temperature (IAT) sensor, checking Check intake system for leaks (false air). Refer to Intake system, checking for leaks (false air)

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.