Volkswagen Golf / Golf GTI / Jetta. Manual — part 117

01-48

DTC code

DTC text

Corrective action

SAE

VAG

P0412 16796 Secondary Air Injection

(AIR) Solenoid Valve -
N112-

Electrical malfunction

- Check Secondary Air Injection (AIR)
Solenoid Valve -N112--

Page 01-100

,

Output Diagnosis Test Mode (DTM)

P0413 16797 Secondary Air Injection

(AIR) Solenoid Valve -
N112--

Open circuit

P0414 16798 Secondary Air Injection

(AIR) Solenoid Valve -
N112--

Short circuit

P0418 16802 Secondary Air Injection

(AIR) Pump Relay -
J299--

Malfunction

- Check Secondary Air Injection (AIR)
Pump Relay -J299--

Page 01-100

,

Output Diagnosis Test Mode (DTM)

DTC table: SAE P0 codes

01-49

DTC code

DTC text

Corrective action

SAE

VAG

P0420 16804 Bank 1 Three Way

Catalytic Converter
(TWC) system

Efficiency too low

- Check Oxygen Sensor (O2S) and Oxygen
Sensor (O2S) control before Three Way
Catalytic Converter (TWC)

Page 24-131

- Check Oxygen Sensor (O2S) and Oxygen
Sensor (O2S) control after Three Way
Catalytic Converter (TWC)

Page 24-140

- Check Oxygen Sensor (O2S) aging before
Three Way Catalytic Converter (TWC)

Page 24-150

- Check Oxygen Sensor (O2S) aging after
Three Way Catalytic Converter (TWC)

Page 24-154

P0422 16806 Bank 1 main Three

Way Catalytic
Converter (TWC)

Efficiency too low

Repair Manual, 2.8 Liter VR6 4V Engine

Mechanical, Engine Code(s): BDF; Repair
Group 26

- Check Three Way Catalytic Converter
(TWC):

Note:

If this malfunction is detected on its own i.e. no Oxygen Sensor (O2S) or control
malfunction, then the Three Way Catalytic Converter (TWC) must be checked for
damage and replaced if necessary.

DTC table: SAE P0 codes

01-50

DTC code

DTC text

Corrective action

SAE

VAG

P0441 16825 Tank

ventilation
system

Flow rate
faulty

- Check Evaporative Emission (EVAP) Canister
Purge RegulatorValve -N80-

Page 01-100

,

Output Diagnosis Test Mode (DTM)

Repair Manual, 2.8 Liter VR6 4V Engine

Mechanical, Engine Code(s): BDF; Repair Group 20

- Check Evaporative Emission (EVAP) Canister
Purge RegulatorValve -N80-:

Repair Manual, 2.8 Liter VR6 4V Engine

Mechanical, Engine Code(s): BDF; Repair Group 20

- Check hoses and connections from fuel tank to
Throttle Valve Control Module:

P0442 16826 Tank

ventilation
system

Small leak
detected

Repair Manual, 2.8 Liter VR6 4V Engine

Mechanical, Engine Code(s): BDF; Repair Group 20

- Check Evaporative Emissions (EVAP) Canister
system:

DTC table: SAE P0 codes

01-51

DTC code

DTC text

Corrective action

SAE

VAG

P0444 16828 Evaporative Emission

(EVAP) Canister Purge
Regulator Valve -N80-

Open circuit

- Check Evaporative Emission (EVAP)
Canister Purge RegulatorValve -N80-

Page 01-100

, Output Diagnosis Test

Mode (DTM)

P0445 16829 Evaporative Emission

(EVAP) Canister Purge
Regulator Valve -N80-

Short circuit

Repair Manual, 2.8 Liter VR6 4V Engine

Mechanical, Engine Code(s): BDF; Repair
Group 20

- Check Evaporative Emission (EVAP)
Canister Purge Regulator Valve -N80- :

P0455 16839 Tank ventilation system

Large leak detected

Repair Manual, 2.8 Liter VR6 4V Engine

Mechanical, Engine Code(s): BDF; Repair
Group 20

- Check Evaporative Emissions (EVAP)
canister system:

P0456 16840 Tank ventilation system

Small leak detected

DTC table: SAE P0 codes