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Toyota Avalon Fault Codes


You can find common Toyota Avalon 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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Do you know the fault code already? Enter it in the box below and hit "Search Codes".

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

View Toyota Avalon Recalls »
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Error Icon P0015

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

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Severity Icon 6/10

Error Icon P0174

System Too Lean (Bank 2)

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Severity Icon 3/10

Error Icon P0441

Evaporative Emission Control System Incorrect Purge flow

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Error Icon P0500

Vehicle Speed Sensor Malfunction

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Severity Icon 3/10

Error Icon P0440

Evaporative Emission Control System Malfunction

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Severity Icon 7/10

Error Icon P0171

System Too Lean (Bank 1)

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Severity Icon 4/10

Error Icon P0128

Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)

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Severity Icon 8/10

Error Icon P0301

Cylinder 1 Misfire Detected

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Error Icon P0351

Ignition Coil A Primary/Secondary Circuit Malfunction

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Error Icon P0355

Ignition Coil E Primary/Secondary Circuit Malfunction

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Error Icon P0352

Ignition Coil B Primary/Secondary Circuit Malfunction

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Error Icon P0330

Knock Sensor 2 Circuit (Bank 2)

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Severity Icon 9/10

Error Icon P0300

Random/Multiple Cylinder Misfire Detected

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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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Severity Icon 7/10

Error Icon P0420

Catalyst System Efficiency Below Threshold (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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Severity Icon 3/10

Error Icon P0442

Evaporative Emission Control System Leak Detected

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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 7/10

Error Icon P0430

Catalyst System Efficiency Below Threshold (Bank 2)

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Severity Icon 3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

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Error Icon P0354

Ignition Coil D Primary/Secondary Circuit Malfunction

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Error Icon P0155

O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)

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Error Icon P0773

Shift Solenoid E Electrical

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Error Icon P0356

Ignition Coil F Primary/Secondary Circuit Malfunction

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Severity Icon 3/10

Error Icon P0325

Knock Sensor 1 Circuit (Bank 2 or Single Sensor)

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Severity Icon 3/10

Error Icon P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

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Error Icon P1130

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

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Error Icon P1705

Not in P or N During KOEO / KOER

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Error Icon P1150

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

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Error Icon P1349

VVT System.

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Error Icon P1604

Code Word Unregestered

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Error Icon P1354

Ignition Coil C Primary Circuit Malfunction

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Error Icon P1605

Knock Control CPU.

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Error Icon P1135

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

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Error Icon B1650

Seat Driver Recline Forward Circuit Short To Ground

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Error Icon P1155

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

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Error Icon P1315

Persistent Misfire

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Error Icon P0118

Engine Coolant Temperature Circuit High Input

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Severity Icon 4/10

Error Icon P0455

System Gross Leak Evaporative Emission

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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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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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Error Icon P0037

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

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Error Icon P0120

Throttle Pedal Position Sensor/Switch A Circuit Malfunction

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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 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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Toyota Avalon Image

About the Avalon

The Avalon was first released in 1994 as the Japanese manufacturer’s flagship sedan for the American market. Since its release, there have been five generations to hit the market. The fifth generation made its debut in 2018.

Despite being sold primarily in North America, the model was discontinued in the United States in 2022. Other countries in which it is sold are Canada, China, South Korea, and various places in the Middle East.

Competition for the Avalon has typically come from American rivals. The most notable of these include the Chrysler 300 and Dodge Charger. In addition to these, the Nissan Maxima and Lexus ES are also competitors.

Despite Toyota being known for reliability, the model does suffer a few common fault codes. The most commonly searched of these is P0015, which indicates the exhaust camshaft is too far behind in timing.

This can be a fairly serious code. Owners have reported that a stuck oil control solenoid is one of the most likely causes of the issue.

Another fairly common issue is P0174, which indicates that the second bank of the engine is running too lean. Because this code relates to the second bank, only a limited number of Avalons that were fitted with V6 engines can be susceptible to it.

In some cases, a faulty oxygen sensor can be the culprit. Another fairly common cause is a dirty or defective MAF sensor.

Another fairly common issue is shown by fault code P0441, which represents an issue with the evaporative emissions control (EVAP) system purge flow. Like a number of Toyota models, a faulty purge control valve is one of the most likely causes of this issue. Another simple fix owners have found is replacing the fuel cap.