Loading fault codes...

Audi A1 Fault Codes


You can find common Audi A1 fault codes on this page that when clicked take you to a detailed description.

You can also type in the fault code you are getting below to find a more detailed description.

Search Audi A1 Codes

Do you know the fault code already? Enter it in the box below and hit "Search Codes".

Audi A1 Recalls

When a car manufacturer detects a problem with a model they put out a recall notice and more often than not offer to fix the problem free of charge.

You can check to see if your Audi A1 has any recall notices on our sister site AutoRecalls.co, sorted by model year.

View Audi A1 Recalls »
Recall Notice Icon
Severity Icon 8/10

Error Icon P0016

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A

Learn More Fixes
Severity Icon 8/10

Error Icon P0087

Fuel Rail/System Pressure - Too Low

Learn More Fixes
Severity Icon 3/10

Error Icon P0441

Evaporative Emission Control System Incorrect Purge flow

Learn More Fixes
Severity Icon 9/10

Error Icon P0299

Turbo / Super Charger Underboost

Learn More Fixes
Severity Icon 7/10

Error Icon P0401

Exhaust Gas Recirculation Flow Insufficient Detected

Learn More Fixes

Error Icon P0111

Intake Air Temperature Circuit Range/Performance Problem

Learn More
Severity Icon 4/10

Error Icon P0101

Mass or Volume Air flow Circuit Range/Performance Problem

Learn More Fixes

Error Icon P0403

Exhaust Gas Recirculation Circuit Malfunction

Learn More
Severity Icon 8/10

Error Icon P0303

Cylinder 3 Misfire Detected

Learn More Fixes
Severity Icon 8/10

Error Icon P0234

Engine Overboost Condition

Learn More Fixes

Error Icon P0118

Engine Coolant Temperature Circuit High Input

Learn More

Error Icon P0501

Vehicle Speed Sensor Range/Performance

Learn More
Severity Icon 7/10

Error Icon P0171

System Too Lean (Bank 1)

Learn More Fixes
Severity Icon 5/10

Error Icon P0172

System Too Rich (Bank 1)

Learn More Fixes
Severity Icon 3/10

Error Icon P0507

Idle Control System RPM higher Than Expected

Learn More Fixes
Severity Icon 5/10

Error Icon P2187

System Too Lean at Idle DTC

Learn More Fixes

Error Icon P2181

Cooling System Performance

Learn More
Severity Icon 9/10

Error Icon P0011

Intake Camshaft Position Timing - Over-Advanced (Bank 1)

Learn More Fixes
Severity Icon 8/10

Error Icon P0301

Cylinder 1 Misfire Detected

Learn More Fixes

Error Icon P0351

Ignition Coil A Primary/Secondary Circuit Malfunction

Learn More

Error Icon P0112

Intake Air Temperature Circuit Low Input

Learn More

Error Icon P1148

O2 Control (Bank

Learn More
Severity Icon 4/10

Error Icon P0031

Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 1 Sensor 1

Learn More Fixes

Error Icon P0161

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

Learn More

Error Icon P00b7

Engine Coolant Flow Low/Performance

Learn More

Error Icon P0117

Engine Coolant Temperature Circuit Low Input

Learn More

Error Icon U1123

SCP (J1850) Invalid or Missing Data for Odometer

Learn More
Severity Icon 9/10

Error Icon U0100

Lost Communication With ECM/PCM "A"

Learn More Fixes

Error Icon U1113

SCP (J1850) Invalid or Missing Data for Primary Id

Learn More

Error Icon U0186

Lost Communication With Audio Amplifier "A"

Learn More
Severity Icon 3/10

Error Icon P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

Learn More Fixes
Severity Icon 6/10

Error Icon P0174

System Too Lean (Bank 2)

Learn More Fixes

Error Icon P0431

Warm Up Catalyst Efficiency Below Threshold (Bank 2)

Learn More

Error Icon P0491

Secondary Air Injection System Insufficient Flow Bank 1

Learn More

Error Icon P0706

Transmission Range Sensor Circuit Range/Performance

Learn More

Error Icon P0190

Fuel Rail Pressure Sensor Circuit Malfunction

Learn More

Error Icon P1558

Throttle Actuator Electrical Malfunction

Learn More

Error Icon P1647

Please check coding

Learn More

Error Icon P1158

Manifold Abs.Pressure

Learn More

Error Icon P1881

Engine Coolant Level Switch Circuit Failure, GEM

Learn More

Error Icon P1156

Manifold Abs.Pressure

Learn More

Error Icon P1137

Long Term Fuel Trim

Learn More

Error Icon P1128

Long Term Fuel Trim

Learn More

Error Icon P1141

Load Calculation

Learn More
Severity Icon 6/10

Error Icon P0341

Camshaft Position Sensor Circuit Range/Performance

Learn More Fixes
Severity Icon 3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

Learn More Fixes
Severity Icon 9/10

Error Icon P0473

Exhaust Pressure Sensor High

Learn More Fixes
Severity Icon 6/10

Error Icon P1206

Cyl.6-Fuel Inj.Circ.

Learn More Fixes
Severity Icon 7/10

Error Icon P0420

Catalyst System Efficiency Below Threshold (Bank 1)

Learn More Fixes
Severity Icon 4/10

Error Icon P0102

Mass or Volume Air Flow Circuit Low Voltage Input

Learn More Fixes
Severity Icon 3/10

Error Icon P2015

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance Bank 1

Learn More Fixes

Error Icon P2279

Intake Air System Leak

Learn More
Severity Icon 3/10

Error Icon P0429

Catalyst Heater Control Circuit (Bank 1)

Learn More Fixes
Severity Icon 6/10

Error Icon P0384

Glow Plug/Heater Circuit B

Learn More Fixes
Severity Icon 4/10

Error Icon P0532

A/C Refrigerant Pressure Sensor Circuit Low Input

Learn More Fixes

Error Icon P0116

Engine Coolant Temperature Circuit Range/Performance Problem

Learn More

Error Icon P1281

Injection Control Pressure Out Of Range High

Learn More
Severity Icon 6/10

Error Icon P0135

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

Learn More Fixes

Error Icon P0668

PCM / ECM / TCM Internal Temperature Sensor Circuit Low

Learn More
Severity Icon 7/10

Error Icon P0100

Mass or Volume Air flow Circuit Malfunction

Learn More Fixes

Error Icon U1111

SCP (J1850) Invalid or Missing Data for Primary Id

Learn More

Error Icon U1017

SCP (J1850) Invalid or Missing Data for Primary Id

Learn More

Error Icon U0101

Lost Communication with TCM

Learn More

Error Icon U1121

SCP (J1850) Invalid or Missing Data for Primary Id

Learn More

Error Icon P0256

Injection Pump Fuel Metering Control B Malfunction (Cam/Rotor/Injector)

Learn More

Error Icon P0457

Evaporative Emission Control System Leak Detected

Learn More

Error Icon P1309

Misfire Monitor AICE Chip Fault

Learn More

Error Icon P1214

Cyl.2-Fuel Inj.Circ.

Learn More

Error Icon P1314

Misfire Rate Catalyst Damage Fault - Bank 2

Learn More

Error Icon P0003

Fuel Volume Regulator Control Circuit Low

Learn More

Error Icon P1316

Injector Driver Module Codes Detected

Learn More

Error Icon P1273

Cylinder #3 High To Low Side Open

Learn More

Error Icon U1044

SCP (J1850) Invalid or Missing Data for Traction Motor

Learn More

Error Icon P0575

Cruise Control Input Circuit

Learn More

Error Icon P0979

Shift Solenoid C Control Circuit Low

Learn More

Error Icon P1602

Power Supply (B+)

Learn More
Audi A1 Image
  • Manufacturer: Audi

About the A1

Sold from 2010 onwards, the A1 is a small car created by the German car company Audi AG.

Advertised as a supermini, the A1 was first unveiled at the Geneva Motor Show as a three-door model, and was later revised to add a five-door sport back version.

First generations carried the industry code ‘8X’ and were marketed to a younger generation with disposable money.

Using the MacPhearson strut (a system designed by Earle S. MacPhearson as early as 1945), the A1 had three trim levels available, the SE, Sport and the S Line. The latter being the top-grade model, these came with sport seating and larger wheels with a start-stop system (as found in cars like the Jaguar XF and the Fiat 500) and a good number of safety features like seatbelt pre-tensioners and numerous airbags.

After Euro NCAP safety tests were conducted, the Audi A1 received a health 90% score for adult safety and an overall five stars.

As a popular category of cars, predictably, the Audi A1 has some serious competition with potential buyers able to compare it against vehicles like the Ford Fiesta, Mini Hatchback, Citroen DS3, VW Polo, Alfa Romeo MiTo, Fiat 500, Skoda Fabia, BMW 1 Series, SEAT Ibiza or the Honda Jazz.

The top five fault codes found on this car are:

  • P0016 – The crankshaft and camshaft positions are wrong when based on the intake camshaft sensor.
  • P0087 – A code generated by the sensor on the fuel rail when checking fuel pressure and could mean that the system pressure is too low.
  • P0441 – A malfunction relating to the purge valve, the valve is not regulating the fuel vapors properly.
  • P0299 – Only found on cars fitted with a turbocharger or supercharge and is a generic code, an under boost condition relating to the system.
  • P0401 – Poor EGR flow, detection of the gas exhaust gas recirculation found by the engine control module.