Volkswagen New Beetle. Manual - part 1958

SAE Diagnostic Trouble Codes (DTCs) 

The DTC always consists of a 5-digit alphanumeric value with the following meaning: 

Component group: 

z

Pxxxx = DTC for drivetrain. 

Norm-Code: 

z

P0xxx = DTCs defined by SAE with specified malfunction texts.  

z

P1xxx = additional emission relevant DTCs provided by manufacturer.  

z

P2xxx = DTCs defined by SAE with specified texts, from MY 2000  

z

P3xxx = additional emissions relevant DTCs provided by manufacturer from MY 2000. 

System group: 

z

Px0xx = Fuel -air mixture and additional emission regulations  

z

Px1xx = Fuel and air ratio.  

z

Px2xx = Fuel and air ratio.  

z

Px3xx = Ignition system.  

z

Px4xx = additional emission regulation.  

z

Px5xx = Speed and idle control.  

z

Px6xx = Control module and output signals.  

z

Px7xx = Transmission.  

z

Px8xx = Transmission.  

z

Px9xx = Control modules, input and output signals.  

Work procedure 

z

Connect diagnostic tester, see CONNECT DIAGNOSTIC TESTER .  

z

Start engine and let run at idle.  

z

Under address word 33, select "Diagnostic mode 3:, Check DTC memory." 

The number of stored malfunctions or "0 malfunctions detected" is displayed. 

z

End diagnosis and switch ignition off. 

NOTE:

Only if engine does not start: 

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Operate starter for approx. 6 seconds. Do not switch ignition off afterward. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

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Repair stored malfunctions according to DTC table: 

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SAE P0xxx-DTCs, see DIAGNOSTIC TROUBLE CODE (DTC) TABLES: .  

z

SAE P1xxx-DTCs, see SAE P1XXX-DTCS .  

z

SAE P2xxx-DTCs, see SAE P2XXX-DTCS .  

z

SAE P3xxx-DTCs, see SAE P3XXX-DTCS .  

z

Erase DTC memory, see DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA .  

z

"E-Gas"-relevant malfunctions are also indicated by the warning lamp for Electronic Power Control 
("EPC warning lamp") in the instrument cluster.  

z

"Emission"-relevant malfunctions are additionally indicated in the instrument cluster via the Malfunction 
Indicator Lamp (MIL).  

z

In Diagnostic mode 2, it can be determined at which operating condition a malfunction was detected and 
stored by the Engine Control Module (ECM), see DIAGNOSTIC MODE 2: CHECKING 
OPERATING CONDITIONS .  

z

Erase DTC memory after repairing malfunction, see DIAGNOSTIC MODE 4: RESET/ERASE 
DIAGNOSTIC DATA .  

Display example: 

P0444Evaporative Emission System Purge Control Valve Circuit Open 

Explanation: 

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P0444 = SAE diagnostic trouble code (malfunction identification number).  

z

Evaporative Emission System Purge Control Valve = malfunctioning wiring path or malfunctioning 
component.  

z

Circuit Open = Malfunction type as text  

Diagnostic mode 4: Reset/erase diagnostic data 

Function 

This diagnostic mode performs the following functions: 

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all emission relevant malfunctions in DTC memory will be erased,  

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the operating conditions at which a malfunction was stored will be reset, see DIAGNOSTIC MODE 2: 
CHECKING OPERATING CONDITIONS .  

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all adaptation values are being reset,  

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all test results of the diagnostic functions are being reset.  

Requirement 

NOTE:

z

The DTC table is sorted by SAE codes. 

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

z

DTC memory was checked, see DIAGNOSTIC MODE 3: CHECK DTC MEMORY .  

Work procedure 

z

Connect diagnostic tester, see CONNECT DIAGNOSTIC TESTER .  

z

Start engine and let run at idle.  

z

Under address word 33, select "Diagnostic mode 4: Reset/erase diagnostic data."  

Erased or reset: 

z

Number and content of the DTC memories,  

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Operating conditions,  

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Adaptation values,  

z

Test results.  

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End diagnosis and switch ignition off.  

z

Generate readiness code, see READINESS CODE, GENERATING .  

Diagnostic mode 5: Check output of oxygen sensor signals 

Function 

The static values of the oxygen sensors are indicated via this diagnostic mode. 

The values of the individual oxygen sensor signal outputs must reach the specified value or must be within the 
min.- and max.- limits. 

Requirements 

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There must not be any DTCs stored in DTC memory, see DIAGNOSTIC MODE 3: CHECK DTC 
MEMORY .  

z

Coolant temperature must be at least 80 °C, see DIAGNOSTIC MODE 1: CHECK MEASURED 
VALUES ; PID 5, Coolant temperature.  

Work procedure 

z

Connect diagnostic tester, see CONNECT DIAGNOSTIC TESTER .  

z

Start engine and let run at idle.  

z

Under address word 33, select "Diagnostic mode 5: Check output of oxygen sensor signals".  

z

Select the desired output of oxygen sensor signals "Test -ID XX".  

Evaluation of output of oxygen sensor signals:

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle

  

z

Test-ID 01 Bank 1 Sensor 2, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

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Test-ID 02 Bank 1 Sensor 2, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

z

Test-ID 07 Bank 1 Sensor 2, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

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Test-ID 08 Bank 1 Sensor 2, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

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Test-ID 129 Bank 1 Sensor 1, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

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Test-ID 130 Bank 1 Sensor 1, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

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Test-ID 131 Bank 1 Sensor 1, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

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Test-ID 132 Bank 1 Sensor 1, see DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF 
COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  

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End diagnosis and switch ignition off.  

Evaluation test-ID 01 Bank 1 Sensor 2: rich to lean sensor barrier voltage 

EVALUATION TEST-ID 01 BANK 1 SENSOR 2: VOLTAGE SPECIFICATION 

If specified value is not obtained: 

z

Replace Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- Bank 1, see 
EXHAUST SYSTEM COMPONENTS, REMOVING AND INSTALLING , item 10.  

z

Erase DTC memory of Engine Control Module (ECM), see DIAGNOSTIC MODE 4: RESET/ERASE 
DIAGNOSTIC DATA .  

z

Generate readiness code, see READINESS CODE, GENERATING .  

Evaluation test-ID 02 Bank 1 Sensor 2: lean to rich sensor barrier voltage 

EVALUATION TEST-ID 02 BANK 1 SENSOR 2: VOLTAGE SPECIFICATION 

If specified value is not obtained: 

Specified value:
min.

max.

Fixed value: 0.652 V

Specified value:
min.

max.

Fixed value: 0.652 V

 

2003 Volkswagen New Beetle GLS 

1998-2004 ENGINE PERFORMANCE On-Board Diagnostic (OBD), 1.8L Generic Scan Tool - New Beetle