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HOMESERVICE MANUALSAUDI1999A4 BASE, 1.8 B, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - SELF-DIAGNOSTICS - INTRODUCTIONPCM CODING
1999 Audi A4 Base, 1.8 B, Automatic

Pcm Coding

1999 Audi A4 Base, 1.8 B, AutomaticSECTION Pcm Coding
NOTE: When using Volkswagen Audi Group (VAG) 1551 scan tool, follow manufacturer's instructions for operation. VAG 1551 scan tool is necessary to perform PCM coding.

If Powertrain Control Module (PCM) is replaced, it is necessary to code new PCM. If new PCM is not properly coded, the following problems may occur:

  • Driveability problems (i.e., harsh shifting).
  • False malfunctions stored in PCM memory.
  • Increased fuel consumption.
  • Increased exhaust emissions.
  • Reduction in transmission life.
  • All PCM functions are not carried out (i.e., EVAP system operation).

Connect VAG 1551 scan tool to Data Link Connector (DLC). Following manufacturer's instructions, access PCM coding information using VAG 1551 scan tool. For PCM coding options, see appropriate PCM CODING OPTIONS table.

As an example, a properly coded PCM for an A4 model with Front Wheel Drive (FWD) without traction control and 5-speed manual transmission would look like 06001 on the VAG 1551 scan tool.

NOTE: After coding PCM and starting engine for first time, allow engine to idle for several minutes so PCM can go through a learn function. Idle speed may be erratic while PCM is learning.
PCM CODING OPTIONS (A4)

Application/Code Option
Country/Emissions
06 USA Equipped With EVAP Leak Detection Pump
0 Front Wheel Drive Without Traction Control
1 Front Wheel Drive With Traction Control
2 All Wheel Drive Without Traction Control
3 All Wheel Drive With Traction Control
Transmission
0 5-Speed Manual Transmission
5 Automatic Transmission 01V
Vehicle Type
1 A4
RENDER: 1.0x

NO RELATED

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