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Toyota Aygo Fault Codes


You can find common Toyota Aygo 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.

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Toyota Aygo 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 Toyota Aygo has any recall notices on our sister site AutoRecalls.co, sorted by model year.

View Toyota Aygo Recalls »
Recall Notice Icon
Severity Icon 7/10

Error Icon P0420

Catalyst System Efficiency Below Threshold (Bank 1)

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Severity Icon 7/10

Error Icon P0171

System Too Lean (Bank 1)

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Severity Icon 9/10

Error Icon P0011

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

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Error Icon P0139

O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)

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Severity Icon 4/10

Error Icon P0137

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

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Severity Icon 5/10

Error Icon P0140

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

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Severity Icon 6/10

Error Icon P0141

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

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Severity Icon 7/10

Error Icon P0134

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

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Severity Icon 8/10

Error Icon P0303

Cylinder 3 Misfire Detected

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Severity Icon 7/10

Error Icon P0110

Intake Air Temperature Circuit Malfunction

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Error Icon P0120

Throttle Pedal Position Sensor/Switch A Circuit Malfunction

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Severity Icon 6/10

Error Icon P0174

System Too Lean (Bank 2)

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Severity Icon 4/10

Error Icon P0102

Mass or Volume Air Flow Circuit Low Voltage Input

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Error Icon P0155

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

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Severity Icon 6/10

Error Icon P0135

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

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Severity Icon 3/10

Error Icon P0507

Idle Control System RPM higher Than Expected

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Error Icon P0505

Idle Control System Malfunction

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Error Icon P0161

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

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Error Icon P0108

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

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Error Icon P0500

Vehicle Speed Sensor Malfunction

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Error Icon P0508

Idle Air Control System Circuit Low

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Severity Icon 3/10

Error Icon P0441

Evaporative Emission Control System Incorrect Purge flow

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Severity Icon 4/10

Error Icon P0455

System Gross Leak Evaporative Emission

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Severity Icon 5/10

Error Icon P0172

System Too Rich (Bank 1)

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Error Icon P0037

Heated Oxygen Sensor (HO2S) Heater Circuit Low Voltage Bank 1 Sensor 2

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Error Icon P0882

TCM Power Input Signal Low

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Error Icon P0402

Exhaust Gas Recirculation Flow Excessive Detected

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Severity Icon 7/10

Error Icon P0401

Exhaust Gas Recirculation Flow Insufficient Detected

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Error Icon P1604

Code Word Unregestered

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Error Icon P1351

IDM Input Circuit Malfunction/ Ignition Coil Control Circuit High Voltage

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Error Icon P1130

Heated oxygen sensors (H02S) 1 (upstream), bank 1

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Error Icon C1241

ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground

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Severity Icon 8/10

Error Icon P0304

Cylinder 4 Misfire Detected

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Error Icon B1421

Passenger Power Window Motor Circuit Short To Ground

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Severity Icon 8/10

Error Icon P0607

Control Module Performance

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Error Icon B1801

Lamp Turn Signal Front Output Circuit Short To Ground

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Error Icon B1826

Wiper Rear High Limit Input Circuit Failure

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Error Icon B1821

Wiper Rear Motor Up Relay Coil Circuit Short To Ground

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Error Icon B1811

Lamp Backup Switch Input Circuit Open

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Error Icon B1800

Lamp Turn Signal Front Output Circuit Short To Battery

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Error Icon C1249

ABS Outlet Valve Coil RR Circuit Short To Ground

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Error Icon C1246

ABS Outlet Valve Coil RR Circuit Failure

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Error Icon C1201

ABS Inlet Valve Coil LF Circuit Short To Ground

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Error Icon C1433

Damper LR Circuit Failure

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Error Icon C1203

ABS Outlet Valve Coil Rear Circuit Open

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Severity Icon 8/10

Error Icon C1223

Lamp Brake Warning Output Circuit Failure

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Error Icon P0741

Torque Converter Clutch Circuit Performance or Stuck Off

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Severity Icon 3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

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Error Icon P0015

Exhaust Camshaft Position Timing - Over-Retarded (Bank 1)

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Error Icon P1603

Transmission control module (TCM) – EEPROM malfunction

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Severity Icon 9/10

Error Icon P0093

Fuel System Leak Detected - Large Leak

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Severity Icon 9/10

Error Icon P0300

Random/Multiple Cylinder Misfire Detected

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Severity Icon 7/10

Error Icon P0430

Catalyst System Efficiency Below Threshold (Bank 2)

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Severity Icon 8/10

Error Icon P0340

Camshaft Position Sensor Circuit Malfunction

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Severity Icon 8/10

Error Icon P0335

Crankshaft Position Sensor A Circuit Malfunction

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Error Icon C1280

Yaw Rate Sensor Signal Fault

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Error Icon P0717

Input/Turbine Speed Sensor Circuit No Signal

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Severity Icon 8/10

Error Icon P0606

ECM/PCM Processor Fault

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Severity Icon 4/10

Error Icon P0031

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

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Error Icon P1135

Air/Fuel Sensor Heater Circuit Response. (Bank 1 Sensor 1)

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Severity Icon 8/10

Error Icon P0016

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A

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Error Icon U0129

Lost Communication With Brake System Control Module

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Severity Icon 9/10

Error Icon U0100

Lost Communication With ECM/PCM "A"

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Severity Icon 8/10

Error Icon U0105

Lost Communication With Fuel Injector Control Module

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Severity Icon 9/10

Error Icon U0001

High Speed CAN Communication Bus

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Error Icon U0121

Lost Communication With Anti-Lock Brake System (ABS) Control Module

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Error Icon U0115

Lost Communication With ECM/PCM "B"

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Severity Icon 9/10

Error Icon U0073

Control Module Communication Bus "A" Off

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Error Icon U0126

Lost Communication with Fuel Pump Control Module (FPCM)

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Error Icon U0142

Lost Communication With Body Control Module "B"

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Error Icon U0140

Lost Communication With Body Control Module

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Error Icon P0418

Secondary Air Injection System Relay A circuit Malfunction

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Error Icon P1605

Knock Control CPU.

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Error Icon P1300

Igniter Circuit Malfunction - No. 1.

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Error Icon P1155

Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2)

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Toyota Aygo Image

About the Aygo

The first generations of Aygo models sold onwards from 2005 under the industry code name AB10/AB20 or AB30.

As a small city car, people could purchase the vehicle as either a 3 or a 5-door hatchback from the low price point of €8,500.

There were a number of similar vehicles that were essentially rebadged versions of the Aygo, changes were made to the rear side windows, steering wheel and front stylings depending upon the company – these cars were the Peugeot 107 (then 108) and Citroen C1.

The Aygo’s success and popularity suffered a potential blow when, in 2010, Toyota issued a global recall due to a sticking accelerator pedal.

It was later discovered that only automatic Aygos were affected along with the C1 and 107.

Following Euro NCAP testing, the Aygo received three stars out of a potential five for both adult and child safety.

2014 saw the second generation introduced with display models appearing at the Geneva Motor Show with the strap line ‘go fun yourself.’

Aygos are extremely recognizable thanks to the front end large black ‘X’, a design attributed to Japanese youth culture taking queues from the manga robot ‘Astro Boy.’

With the safety scores arguably low for a car in its class, it’s understandable that potential customers would be better advised to consider alternatives like the VW Up!, Kia Picanto hatchback, Hyundai i10, Fiat 500, Mini Hatchback, Honda e hatchback, Suzuki Ignis or the Smart EQ for Two.

Some fault codes that can show for this vehicle are:

  • P0420 – A low catalyst system efficiency.
  • P0171 – There is either too little fuel or too much oxygen resulting in an issue with the exhaust.
  • P0011 – A generic code, this issue is picked up by the ECM and suggests that the bank 1 intake camshaft is too advanced.
  • P0139 – There is a low drop in voltage.