Loading fault codes...

Toyota Aygo X Fault Codes


You can find common Toyota Aygo X 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 Toyota Aygo X Codes

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

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

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

Error Icon P0171

System Too Lean (Bank 1)

Learn More Fixes
Severity Icon 7/10

Error Icon P0420

Catalyst System Efficiency Below Threshold (Bank 1)

Learn More Fixes

Error Icon P0750

Shift Solenoid A Malfunction

Learn More

Error Icon P0740

Torque Converter Clutch Circuit Malfunction

Learn More

Error Icon P0800

Transmission Control System (MIL Request)

Learn More

Error Icon P0850

Park / Neutral Switch Input Circuit

Learn More

Error Icon P0900

Clutch Actuator Circuit / Open

Learn More

Error Icon P0999

Shift Solenoid F Control Circuit High

Learn More
Severity Icon 3/10

Error Icon P0441

Evaporative Emission Control System Incorrect Purge flow

Learn More Fixes
Severity Icon 4/10

Error Icon P0455

System Gross Leak Evaporative Emission

Learn More Fixes

Error Icon C1241

ABS Hydraulic Pressure Differential Switch Input Short Circuit To Ground

Learn More
Severity Icon 8/10

Error Icon P0304

Cylinder 4 Misfire Detected

Learn More Fixes

Error Icon B1421

Passenger Power Window Motor Circuit Short To Ground

Learn More
Severity Icon 8/10

Error Icon P0607

Control Module Performance

Learn More Fixes

Error Icon B1801

Lamp Turn Signal Front Output Circuit Short To Ground

Learn More

Error Icon B1826

Wiper Rear High Limit Input Circuit Failure

Learn More

Error Icon B1821

Wiper Rear Motor Up Relay Coil Circuit Short To Ground

Learn More

Error Icon B1811

Lamp Backup Switch Input Circuit Open

Learn More

Error Icon B1800

Lamp Turn Signal Front Output Circuit Short To Battery

Learn More

Error Icon C1249

ABS Outlet Valve Coil RR Circuit Short To Ground

Learn More

Error Icon C1246

ABS Outlet Valve Coil RR Circuit Failure

Learn More

Error Icon C1201

ABS Inlet Valve Coil LF Circuit Short To Ground

Learn More

Error Icon C1433

Damper LR Circuit Failure

Learn More

Error Icon C1203

ABS Outlet Valve Coil Rear Circuit Open

Learn More
Severity Icon 8/10

Error Icon C1223

Lamp Brake Warning Output Circuit Failure

Learn More Fixes

Error Icon P1604

Code Word Unregestered

Learn More

Error Icon P0741

Torque Converter Clutch Circuit Performance or Stuck Off

Learn More
Severity Icon 3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

Learn More Fixes

Error Icon P0015

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

Learn More

Error Icon P1603

Transmission control module (TCM) – EEPROM malfunction

Learn More
Severity Icon 9/10

Error Icon P0093

Fuel System Leak Detected - Large Leak

Learn More Fixes

Error Icon P0037

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

Learn More
Severity Icon 9/10

Error Icon P0300

Random/Multiple Cylinder Misfire Detected

Learn More Fixes
Severity Icon 7/10

Error Icon P0430

Catalyst System Efficiency Below Threshold (Bank 2)

Learn More Fixes

Error Icon P0120

Throttle Pedal Position Sensor/Switch A Circuit Malfunction

Learn More
Severity Icon 8/10

Error Icon P0340

Camshaft Position Sensor Circuit Malfunction

Learn More Fixes
Severity Icon 8/10

Error Icon P0335

Crankshaft Position Sensor A Circuit Malfunction

Learn More Fixes

Error Icon C1280

Yaw Rate Sensor Signal Fault

Learn More

Error Icon P0717

Input/Turbine Speed Sensor Circuit No Signal

Learn More
Severity Icon 8/10

Error Icon P0606

ECM/PCM Processor Fault

Learn More Fixes
Severity Icon 4/10

Error Icon P0031

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

Learn More Fixes

Error Icon P1135

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

Learn More

Error Icon P0155

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

Learn More
Severity Icon 8/10

Error Icon P0016

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A

Learn More Fixes

Error Icon U0129

Lost Communication With Brake System Control Module

Learn More
Severity Icon 9/10

Error Icon U0100

Lost Communication With ECM/PCM "A"

Learn More Fixes
Severity Icon 8/10

Error Icon U0105

Lost Communication With Fuel Injector Control Module

Learn More Fixes
Severity Icon 9/10

Error Icon U0001

High Speed CAN Communication Bus

Learn More Fixes

Error Icon U0121

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

Learn More

Error Icon U0115

Lost Communication With ECM/PCM "B"

Learn More
Severity Icon 9/10

Error Icon U0073

Control Module Communication Bus "A" Off

Learn More Fixes

Error Icon U0126

Lost Communication with Fuel Pump Control Module (FPCM)

Learn More

Error Icon U0142

Lost Communication With Body Control Module "B"

Learn More

Error Icon U0140

Lost Communication With Body Control Module

Learn More
Severity Icon 9/10

Error Icon P0011

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

Learn More Fixes

Error Icon P0418

Secondary Air Injection System Relay A circuit Malfunction

Learn More

Error Icon P1605

Knock Control CPU.

Learn More

Error Icon P1300

Igniter Circuit Malfunction - No. 1.

Learn More

Error Icon P1155

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

Learn More

Error Icon P1121

Throttle position (TP) sensor/mass air flow (MAF) sensor – implausible signal

Learn More

Error Icon P1150

Air/Fuel Sensor Circuit Range/Performance. (Bank 1 Sensor 2)

Learn More

Error Icon P1130

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

Learn More

Error Icon P1349

VVT System.

Learn More

Error Icon P1215

Accelerator pedal position (APP) sensor 2 – signal voltage low

Learn More

Error Icon P1667

CI Circuit Malfunction

Learn More

Error Icon P1346

Fuel Level Sensor B Circuit Malfunction

Learn More

Error Icon P1128

Heated oxygen sensors (H02S) 1 (upstream), bank 1/2

Learn More

Error Icon P1315

Persistent Misfire

Learn More

Error Icon P1656

ECM/TP sensor amplifier – circuit malfunction

Learn More

Error Icon P1127

Heated oxygen sensor (H02S) 2 (downstream), bank 1

Learn More
Severity Icon 7/10

Error Icon P0010

Intake Camshaft Position Actuator Circuit / Open (Bank 1)

Learn More Fixes
Severity Icon 9/10

Error Icon P0012

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

Learn More Fixes
Severity Icon 7/10

Error Icon P0013

Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)

Learn More Fixes
Severity Icon 8/10

Error Icon P0014

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

Learn More Fixes
Severity Icon 8/10

Error Icon P0017

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor B

Learn More Fixes
Severity Icon 4/10

Error Icon P0036

Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2

Learn More Fixes
Toyota Aygo X Image

About the Aygo X

The Aygo X was launched in 2022 as the replacement for the Aygo. It is currently in its first generation and is marketed as a crossover city car

It is among the first models to occupy this new segment of the market with other competing models including the Fiat Panda Cross and Hyundai Casper.

Despite Toyota having a reputation for reliability, Aygo X owners have reported a few fairly common fault codes. The most common of these is P0420, which represents an issue with the catalytic converter.

Older models are more prone to suffering from exhaust leaks, which can cause this, but the most likely cause is a failing or damaged catalytic converter.

Another fairly common code is P0171, which is a broad-scope code that indicates that the engine is running too lean. The problem with this is that anything that disrupts the ideal air-fuel mixture can be the cause.

Owners have found some success in checking the MAF sensor for defects or dirt. Another fairly common culprit is a faulty oxygen sensor.

Some owners have also reported fault code P0011, which is a serious code. This is logged when the intake camshaft is over-advanced and the PCM cannot fix it. Aygo owners need to have this type of code fixed immediately to prevent serious damage from occurring.

With any luck, the main cause for this is a faulty camshaft position sensor. Other potential causes include a faulty oil control solenoid, as well as running the engine with old or dirty oil.