Tech Tip: Volkswagen Diagnostic Trouble Codes

Tech Tip: Volkswagen Diagnostic Trouble Codes

Diagnostic Trouble Codes (DTCs) P1580 (Throttle Actuator B1 Malfunction) and P0103 (Mass or Volume Air Flow Circuit High Input) are simultaneously stored in DTC memory. The problem may be caused by an attempt to start a vehicle with a dead or low-charged battery.

Diagnostic Trouble Codes (DTCs) P1580 (Throttle Actuator B1 Malfunction) and P0103 (Mass or Volume Air Flow Circuit High Input) are simultaneously stored in DTC memory. The problem may be caused by an attempt to start a vehicle with a dead or low-charged battery (below approximately 7V). These DTCs predominately show up together on a vehicle with a low-charged or dead battery.

Affected Models:
• Golf, Jetta and Passat, with engine codes ABA, AAA;
• 1996-’99 Cabrio with engine code ABA; and
• 1997-2000 EuroVan with engine code AES.

Service Procedure:
1. If an attempt is made to start a vehicle with a battery charge at approximately 7V (or lower), DTC P1580 (17988) will be stored in DTC memory.

2. Once DTC P1580 (17988) is stored, if the vehicle is then jump-started and driven, the second DTC, P0103 (16487), will then be stored.
Note: Throttle valve angle (when checked in “Basic setting” Function 04, display group 098) will be “0” in any throttle valve position.

3. Once these DTCs have been stored in DTC memory, the following applies:
• If the DTCs are erased and throttle body adaptation is not performed, both DTCs will be immediately stored again in DTC memory.
• If throttle body adaptation is performed (without erasing the DTCs), “error” will be displayed on the VAG 1551 scan tool in Display Group 098.
• In both cases, the vehicle may not start or may run poorly.

4. Do not replace any parts for this condition. Instead perform the following steps.

5. The following must be performed in sequence to remove stored DTCs P1580 and P0103:
• Battery condition must be OK.
• Charge and/or replace the battery according to procedures in latest version of VESIS, Group 27.

6. With battery condition OK:
• Connect the VAG 1551 scan tool.
• Erase any stored DTCs.
• Perform Throttle Body Adaptation (see appropriate Repair Manual).
• Erase the stored DTCs again.
• Set the readiness code.

Technical service bulletin courtesy of ALLDATA.

For additional tech tips, visit www.alldata.com.

You May Also Like

Brake Pad Edge Codes – What Can They Tell You?

The edge code is a language written by engineers, federal entities and industry associations.

When a brake pad is manufactured, one of the last steps involved is to print a series of letters and numbers on the edge of the friction material. This code has been on brake shoes and pads for more than 60 years, but what does it mean?

The “Edge Code” can tell you information about a brake pad’s friction material. These letters and numbers can help you to select the correct brake pads or shoes for a vehicle. But, the edge code can do only so much. 

USPS to Buy Six Canoo EVs

The Postal Service will take delivery of six right-hand drive versions of Lifestyle Delivery Vehicle 190 in Q1 2024.

Tool Time Podcast: Clore Automotive

Jim O’Hara from Clore Automotive joins Nadine Battah and Eric Garbe.

Ride Control For Electric Vehicles

Replacement units are available from sources other than the dealer.

CITGO Enters EV Space with Pilot Program Launch

The CITGO location on 11 Mile Road in Michigan now offers both regular transportation fuel and EV charging stations.

Other Posts

MEMA Aftermarket Suppliers Becomes UAF Gold Lifetime Trustee

The partnership with UAF is a commitment to the future of the automotive aftermarket, MEMA Aftermarket Suppliers said.

Castrol Turns 125, Debuts New Market Strategy

As part of the new strategy, Castrol will explore opportunities in battery thermal management, digital and service solutions and data center immersion cooling.

Brake Problems

Reducing brake drag on late-model vehicles is not accomplished by a single component; it takes a system.

FCS Introduces 18 New Numbers in February

The new release includes 4 shock absorbers and 14 suspension struts.