17545moderate severityPowertrain
Fuel Metering: Bank 1 System too Rich
on 2002 Audi A6 3.0L V6 · AWD
What this code means
The engine is running too rich on bank 1, meaning too much fuel or too little air in the mixture. Equivalent to OBD-II code P1137.
Symptoms
- Black smoke from exhaust
- Poor fuel economy
- Fuel smell and rough running
Common causes
- Leaking or stuck-open fuel injector
- Faulty oxygen sensor
- High fuel pressure or bad regulator
- Dirty or faulty MAF sensor
Diagnostic steps
- Read fuel trim values with scan tool
- Check fuel pressure against spec
- Inspect injectors for leaks
- Test MAF and O2 sensor operation
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Other Powertrain codes on this vehicle
00532
Supply Voltage B+ Signal too Low
16394
Camshaft/Crankshaft Position Correlation Bank 1
16395
Camshaft Position Actuator Circuit/Open Bank 1
16486
Mass or Volume Air Flow Circuit Low Input
16487
Mass or Volume Air Flow Circuit High Input
16500
Engine Coolant Temperature Circuit Malfunction
16501
Engine Coolant Temperature Circuit Low Input
16502
Engine Coolant Temperature Circuit High Input
16514
O2 Sensor Circuit Bank 1 Sensor 1
16515
O2 Sensor Circuit Low Voltage Bank 1 Sensor 1