01315 on Volkswagen: How to Diagnose & Fix
ABS Hydraulic Return Pump (VAG)
1 Volkswagen model · 1 documented issue · $150-$500 repair
01315 on Volkswagen by model: symptoms, diagnosis and fix
The Golf R uses a Haldex (Gen 4 on Mk6, Gen 5 on Mk7+) rear differential coupling for its AWD system. The Haldex pump and filter become clogged with clutch plate debris, reducing the system's ability to send power to the rear wheels. When clogged, the Golf R behaves essentially as a front-wheel-drive car during spirited driving, with the rear axle not engaging. The Haldex filter is often overlooked during routine service because many shops are unaware it exists.
Common Symptoms
- Front wheels spinning in low-traction conditions (AWD not engaging)
- Car feels like FWD during hard cornering
- Haldex warning light (if equipped)
- Understeer that wasn't present when new
- Groaning or whining noise from rear differential area
How to Fix
Service the Haldex system every 20,000-30,000 miles: drain and refill the Haldex fluid (VW G 060 175 A2) and replace the Haldex filter. The filter is internal to the pump assembly on Gen 5 units. Use only VW-specified Haldex fluid — generic gear oil will damage the clutch plates. After service, the Haldex should be activated with VCDS to verify proper pump operation.
Owner tips & cautions
- TipService the Haldex every 20,000 miles — this is the single most important AWD maintenance item and most shops don't even know it exists
- WarningNever use generic gear oil or ATF in the Haldex — wrong fluid destroys the clutch plates and pump, turning a $200 service into a $2,500 Haldex replacement
01315 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does 01315 mean on a Volkswagen?
01315 stands for "ABS Hydraulic Return Pump (VAG)." VAG (VW/Audi) specific code for ABS hydraulic pump circuit fault. On Volkswagen it is documented across 1 model: Golf R.
What are the most common causes of 01315?
The most common causes of 01315 are: ABS pump motor failure, Relay fault, Wiring issue, Low battery voltage affecting pump, ABS module fault. The specific cause varies by vehicle.
How much does it cost to fix 01315 on a Volkswagen?
Published repair estimates on Volkswagen range from $150 to $500 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
Looking for 01315 on a different make?
View 01315 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.