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Toyota bZ4X Fault Codes

You can find common Toyota bZ4X 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 bZ4X 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 bZ4X has any recall notices on our sister site AutoRecalls.co, sorted by model year.

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Common bZ4X Fault Codes

These are the most common bZ4X fault codes that people are searching for.

Severity Icon 3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

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Error Icon P0504

Brake Switch A / B Correlation

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Error Icon P0540

Intake Air Heater A Circuit

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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 P0700

Transmission Control System Malfunction

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Error Icon P0740

Torque Converter Clutch Circuit Malfunction

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Error Icon P0750

Shift Solenoid A Malfunction

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Error Icon P0800

Transmission Control System (MIL Request)

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Severity Icon 3/10

Error Icon P0441

Evaporative Emission Control System Incorrect Purge flow

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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 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 P1604

Code Word Unregestered

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Error Icon P0741

Torque Converter Clutch Circuit Performance or Stuck Off

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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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Error Icon P0037

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

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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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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 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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Error Icon P0155

O2 Sensor Heater Circuit Malfunction (Bank 2 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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Severity Icon 9/10

Error Icon P0011

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

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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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Error Icon P1121

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

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Error Icon P1150

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

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Error Icon P1130

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

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Error Icon P1349

VVT System.

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Error Icon P1215

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

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Error Icon P1667

CI Circuit Malfunction

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Error Icon P1346

Fuel Level Sensor B Circuit Malfunction

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Error Icon P1128

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

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Error Icon P1315

Persistent Misfire

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Error Icon P1656

ECM/TP sensor amplifier – circuit malfunction

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Error Icon P1127

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

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Severity Icon 7/10

Error Icon P0010

Intake Camshaft Position Actuator Circuit / Open (Bank 1)

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Severity Icon 9/10

Error Icon P0012

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

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Severity Icon 7/10

Error Icon P0013

Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)

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Severity Icon 8/10

Error Icon P0014

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

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Severity Icon 8/10

Error Icon P0017

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor B

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Severity Icon 4/10

Error Icon P0036

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

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About the bZ4X