Toyota Diagnostic Trouble Codes
OBD2 fault codes seen on Toyota vehicles, with what each code means and the Toyota models it shows up on. Each code's page has its typical repair cost range.
Own a Toyota? The free Skanyx app reads these fault codes from your car and rates how urgent each one is.
Get the free appElectrical
"A" Camshaft Position Actuator Circuit (Bank 1)
- Toyota Corolla • 2008-2024
Toyota's VVT-i system adjusts the camshaft position with engine oil pressure applied to an actuator, so check…
Intake Camshaft Position - Timing Over-Retarded (Bank 1)
- Toyota Camry 2.4L / 2.5L • 2007-2017
Throttle Position Sensor/Switch A Circuit Range/Performance Problem
- Toyota Camry • 2006-2011 (XV40, 2AZ-FE 2.4L)
On the 2AZ-FE, cleaning carbon from the throttle bore is a cheap first step. If the code returns, the…
Throttle/Pedal Position Sensor/Switch A Circuit Low Input
- Toyota Camry • 2007-2017 (2.5L 2AR-FE and 3.5L 2GR-FE)
On the Camry the throttle position sensor is built into the electronic throttle body, so a faulty sensor…
Throttle/Pedal Position Sensor/Switch A Circuit High Input
- Toyota Camry • 2006-2011
On the Camry (2006 to 2011) with the 2AZ-FE or 2GR-FE engine, P0123 can come from the sensor inside the…
Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
- Toyota Camry • 2002-2011
The V6 Camry engines are the 1MZ-FE (3.0 L, until 2006) and the 2GR-FE (3.5 L, from 2006).
Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
- Toyota Camry • 2007-2024
On the Camry, P0327 refers to knock sensor 1 (bank 1 or the single sensor). Check its wiring and connector…
Camshaft Position Sensor A Circuit Malfunction (Bank 2)
- Toyota Tacoma 1GR-FE 4.0L V6 • 2004-2015
The 4.0 L 1GR-FE V6 in the 2004-2015 Tacoma has two cylinder banks and variable valve timing (VVT-i) on the…
Idle Air Control System Circuit Low
- Toyota Camry • 1997-2006
Older Camrys with the 5S-FE use a rotary-solenoid idle speed control valve mounted on the throttle body…
Idle Air Control System Circuit High
- Toyota Camry • 1997-2006
Older Camrys with the 5S-FE use a rotary-solenoid idle speed control valve mounted on the throttle body. An…
Engine Oil Pressure Sensor/Switch Circuit Malfunction
- Toyota Camry • 2011-2019
The XV50 Camry (sold 2011 to 2019) uses the 2.5 litre 2AR-FE four-cylinder petrol engine.
Battery Control System Malfunction (Toyota hybrids)
- Toyota Prius (first generation, 1.5 petrol hybrid) • 2001-2003
- Toyota Prius (second generation, XW20) • 2004-2009
Emissions
"A" Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
- Toyota Camry • 2002-2024
The 2AZ-FE 2.4 (Camry from 2002) has VVT-i on the intake camshaft, so oil condition matters for P0011: keep…
Manifold Absolute Pressure/Barometric Pressure Circuit
- Toyota Hilux • 2005-2015
On the 2.5 D-4D (2KD-FTV) and 3.0 D-4D (1KD-FTV) diesels, Toyota's repair manual (Argentine-built Hilux) sets…
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance
- Toyota Yaris • 2005-2020
The 1.0 and 1.3 litre petrol engines of the Yaris (XP90 and XP130 generations) are naturally aspirated, so…
Manifold Absolute Pressure/Barometric Pressure Circuit High
- Toyota Hilux 2.5 D-4D and 3.0 D-4D (2KD-FTV, 1KD-FTV) • 2004-2015
Toyota's repair manual for the Hilux D-4D diesels sets P0108 for an open or short in the MAP sensor circuit…
Intake Air Temperature Sensor 1 Circuit
- Toyota Prius • 2004-2009
On this Prius the IAT sensor is built into the mass air flow meter, and Toyota's monitor calls P0110 a…
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
- Toyota Corolla • 2005-2024
On the Corolla, P0131 on the bank 1 upstream sensor can come from an ageing sensor or from an exhaust leak…
Oxygen Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
- Toyota Camry • 1997-2011
Fit a replacement that matches the original part specification, since a sensor that switches too slowly can…
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
- Toyota Camry • 2007-2024
Match the part number on the sensor you remove when you order a replacement. V6 models have two banks, so…
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
- Toyota Camry • 2011-2019
The XV50 Camry (sold 2011 to 2019) uses the 2.5 litre 2AR-FE four-cylinder petrol engine. P0141 points to the…
Exhaust Gas Recirculation (EGR) Flow Insufficient
- Toyota Camry • 2007-2024
Catalyst System Efficiency Below Threshold (Bank 1)
- Toyota Camry • 2007-2024
The 2.4L 2AZ-FE in the 2007-2011 Camry has a documented oil consumption problem linked to its piston rings…
Catalyst System Efficiency Below Threshold (Bank 2)
- Toyota Camry • 2007-2024
P0430 on the Camry V6 (2GR-FE) usually means the Bank 2 converter has reached the end of its life on a…
Exhaust Gas Recirculation Throttle Position Control Range/Performance
- Toyota Hilux 2.5 D-4D and 3.0 D-4D (2KD-FTV, 1KD-FTV) • 2004-2015
Toyota's repair manual for the Hilux with the 2.5 and 3.0 D-4D diesels describes the diesel throttle as a…
Diesel Particulate Filter Efficiency Below Threshold (Bank 2)
- Toyota Land Cruiser V8 D-4D • 2012-2021
DPF-equipped versions of the 4.5 V8 D-4D (1VD-FTV) in the Land Cruiser 200 carry two particulate filters, one…
Post Catalyst Fuel Trim System Too Lean Bank 1
- Toyota Camry • 2007-2017
Engines covered (petrol): 2.4 litre 2AZ-FE, 2.5 litre 2AR-FE. No model-specific cause is documented for this…
Post Catalyst Fuel Trim System Too Lean Bank 2
- Toyota Camry • 2006-2017
The Camry V6 of 2006 to 2017 (XV40 and XV50) uses the 3.5 litre 2GR-FE, a V6 with two cylinder banks, so it…
Intake Air System Leak
- Toyota Camry 2.4L 2AZ-FE • 2002-2009
The 2.4 L 2AZ-FE was fitted to the Camry from 2002. Inspect the ribbed intake air connector between the MAF…
O2 Sensor Circuit Range/Performance (Bank 1 Sensor 1)
- Toyota Prius • 2003-2009
- Toyota RAV4 3.5 V6 (2GR-FE) • 2006-2012
Ignition
Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
- Toyota Camry • 2009-2017
The 2.5L 2AR-FE replaced the 2AZ-FE in the North American Camry in 2009 and stayed through the 2012-2017…
Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
- Toyota Camry • 2007-2018
Inspect the knock sensor connector and wiring for corrosion before replacing the sensor.
Camshaft Position Sensor Circuit Malfunction
- Toyota Camry • 2007-2024
Ignition Coil A Primary/Secondary Circuit Malfunction
- Toyota Camry • 2002-2011
Engine covered (petrol): 2.4 litre 2AZ-FE. P0351 reports a fault in the circuit of ignition coil A.
Ignition Coil B Primary/Secondary Circuit Malfunction
- Toyota Camry • 2002-2011
Check the spark plug well for oil before replacing the coil.
Ignition Coil C Primary/Secondary Circuit Malfunction
- Toyota Camry • 2006-2017 (2GR-FE 3.5L V6; 2AR-FE 2.5L I4 from 2009)
The Camry came with a 3.5 litre V6 (2GR-FE) and, from 2009 in the US and Canada, a 2.5 litre four (2AR-FE…
Ignition Coil D Primary/Secondary Circuit Malfunction
- Toyota Camry • 2006-2017
The Camry four-cylinder engines are the 2.4 2AZ-FE (XV40, 2006-2011) and the 2.5 2AR-FE (XV50, from 2011).
Igniter Circuit No. 1 (Toyota, Lexus); Boost Calibration Fault (Ford)
- Toyota Tacoma 2.7 (1996) • 1996
Motor magazine describes the Toyota P1300 logic: the code sets when the engine computer sees correct camshaft…
Ignition Diagnostic Monitor Input Circuit Malfunction (Ford); Camshaft or VVT Sensor Range/Performance (Toyota, Lexus, Audi, VW)
- Toyota Avalon 3.0 V6 • 2000-2004
Toyota and Lexus list P1351 as a variable valve timing sensor range or performance problem on the right-hand…
Fuel System
Mass or Volume Air Flow Circuit Malfunction
- Toyota RAV4 2.4 (2AZ-FE) • 2004-2012
RAV4s with the 2.4 litre 2AZ-FE petrol use a hot-wire MAF meter, and Toyota's repair manual sets P0100 when…
Mass Air Flow Sensor Range/Performance
- Toyota Camry • 2011-2017
On the 2.5L 2AR-FE Camry, P0101 usually comes down to a dirty MAF element or air entering the intake after…
System Too Lean (Bank 1)
- Toyota Camry • 2011-2017
On the 2.5L 2AR-FE Camry, P0171 usually points to air entering after the MAF sensor, for example at the…
System Too Rich (Bank 1)
- Toyota Camry • 2007-2024
A contaminated air mass (MAF) sensor can give a wrong reading, for example after an over-oiled aftermarket…
System Too Lean (Bank 2)
- Toyota Camry • 2007-2024
P0174 only appears on the V6 Camry (2GR-FE), since the four-cylinder has a single bank and triggers P0171…
Idle Air Control System RPM Lower Than Expected
- Toyota Camry • 2002-2018
On a Camry, look for carbon in the throttle bore and for air leaks into the intake before replacing parts.
Idle Air Control System RPM Higher Than Expected
- Toyota Camry • 2007-2024
Bank 1 Air-Fuel Ratio Imbalance
- Toyota Tundra 4.6 V8 • 2010-2019
- Toyota Venza 2.7 • 2009-2016
Cooling System
Engine Coolant Temperature (ECT) Circuit
- Toyota Corolla • 2005-2024
Check the sensor connector for corrosion before replacing the sensor.
Engine Coolant Temperature (ECT) Circuit Range / Performance
- Toyota Corolla • 2005-2024
A thermostat that is stuck open or opens too early can set P0116, so the warm-up curve in live data is worth…
Engine Coolant Temperature (ECT) Circuit Low
- Toyota Corolla • 2005-2024
Engine Coolant Temperature (ECT) Circuit High
- Toyota Corolla • 2005-2024
Coolant Thermostat Below Regulating Temperature
- Toyota Camry • 2007-2024
Fit a thermostat with the opening temperature the manufacturer specifies, because a unit with a lower rating…
Misfire
Random/Multiple Cylinder Misfire Detected
- Toyota Camry • 2007-2024
Cylinder 3 Misfire Detected
- Toyota Yaris • 2005-2020
The 1.0-litre 1KR-FE in the Yaris is a three-cylinder engine, so P0303 points to the last of its three…
Cylinder 5 Misfire Detected
- Toyota Camry 3.5L V6 (2GR-FE) • 2006-2017
The 3.5-litre 2GR-FE is a V6 with dual VVT-i and a timing chain, fitted to the Camry from 2006 (XV40) to 2017…
Cylinder 6 Misfire Detected
- Toyota Camry • 2007-2018
Camry V6 with the 2GR-FE typically logs P0306 from a worn cylinder 6 coil or a clogged injector. Cylinder 6…
EVAP System
Evaporative Emission System: Incorrect Purge Flow
- Toyota Camry • 2007-2024
On a Camry, P0441 points to the purge valve or to a charcoal canister that restricts the flow. Check the…
Evaporative Emission System Leak Detected (Small Leak)
- Toyota Yaris • 2006-2024
On a Yaris with a screw-on fuel cap, a worn cap seal is a cheap first thing to rule out for P0442. If a new…
Evaporative Emission System Vent Control Circuit
- Toyota Camry • 2002-2011
Toyota Camry EVAP vent valves are located near the charcoal canister at the rear of the vehicle. Toyota's…
Evaporative Emission System: Very Small Leak
- Toyota Camry • 2007-2024
On a Camry with a screw-on fuel cap, check the cap seal first. If a new cap does not cure it, a smoke test…
Evaporative Emission System: High Purge Flow
- Toyota Camry • 2007-2024
Transmission
Diagnose your Toyota with Skanyx
Connect a standard Bluetooth OBD2 adapter to your Toyota, scan for codes, and get AI-powered diagnostics with severity ratings and repair cost estimates.
Download Skanyx