diagnostic trouble code chart

DI12C31

DI16DIAGNOSTICS ENGINE (2RZFE, 3RZFE)

278Author: Date:

2003 TOYOTA TACOMA (RM1002U)

DIAGNOSTIC TROUBLE CODE CHARTHINT:Parameters listed in the chart may not be exactly the same as your readings due to the type of instrumentor other factors.If a malfunction code is displayed during the DTC check in the check mode, check the circuit for the codeslisted in the table below. For details of each code, refer to the See page under the respective DTC No.in the DTC chart.

DTC No.(See page) Detection Item Trouble Area MIL*

1 Memory

P0036(DI25)

Oxygen Sensor Heater ControlCircuit (Bank 1 Sensor 2)

Open or short in heater circuit of heated oxygen sensorHeated oxygen sensor heaterEFI main relayECM

P0100(DI28) Mass or Volume Air Flow Circuit

Open or short in mass air flow meter circuitMass air flow meterECM

P0101(DI32)

Mass or Volume Air Flow CircuitRange/Performance Problem Mass air flow meter

P0110(DI33) Intake Air Temperature Circuit

Open or short in intake air temp. sensor circuit Intake air temp. sensor (built into mass air flow meter)ECM

P0115(DI38)

Engine Coolant Temperature Cir-cuit

Open or short in engine coolant temp. sensor circuitEngine coolant temp. sensorECM

P0116(DI42)

Engine Coolant Temperature Cir-cuit Range/Performance Prob-lem

Cooling systemEngine coolant temp. sensor

P0120(DI44)

Throttle Pedal Position Sensor/Switch A Circuit

Open or short in throttle position sensor circuitThrottle position sensorECM

P0121(DI48)

Throttle Pedal Position Sensor/Switch A Circuit Range/Perfor-mance Problem

Throttle position sensor

P0125(DI42)

Insufficient Coolant Temperaturefor Closed Loop Fuel Control Same as DTC No. P0116

P0128(DI49)

Coolant Thermostat (CoolantTemperature Below ThermostatRegulating Temperature)

ThermostatCooling systemEngine coolant temp. sensorECM

P0134 *4(DI50)

Oxygen Sensor Circuit No Activ-ity Detected (Bank 1 Sensor 1)

Open or short in A/F sensor (bank 1 sensor 1) circuitA/F sensor (bank 1 sensor 1)A/F sensor heaterEFI main relayA/F sensor heater and relay circuitAir induction systemFuel pressure InjectorGas leak in exhaust systemPCV hose connectionPCV valve and hoseECM

DIAGNOSTICS ENGINE (2RZFE, 3RZFE)DI17

279Author: Date:


P0135(DI61)

Oxygen Sensor Heater Circuit(Bank 1 Sensor 1)

Open or in heater circuit of A/F sensorA/F sensor heaterECM

P0136(DI64)

Oxygen Sensor Circuit Malfunc-tion (Bank 1 Sensor 2)

Open or short in heated oxygen sensor circuitHeated oxygen sensor

P0171(DI68) System too Lean (Bank 1)

Air induction system Injector blockageMass air flow meterEngine coolant temp. sensorFuel pressureGas leakage in exhaust systemOpen or short in A/F sensor (bank 1 sensor 1) circuitA/F sensor (bank 1 sensor 1)PCV valve and hosePCV hose connectionEFI main relayA/F sensor heater and relay circuit

P0172(DI68) System too Rich (Bank 1)

Injector leak or blockageMass air flow meterEngine coolant temp. sensor Ignition systemFuel pressureGas leakage in exhaust systemOpen or short in A/F sensor (bank 1 sensor 1) circuitA/F sensor (bank 1 sensor 1)EFI main relayA/F sensor heater and relay circuit

P0300(DI77)

Random/Multiple Cylinder MisfireDetected

Open or short in engine wireConnector connectionVacuum hose connection

P0301(DI77) Cylinder 1 Misfire Detected

Vacuum hose connection Ignition system InjectorFuel pressure


Fuel ressureEGR system (Only for 3RZFE)Mass air flow meterEngine coolant temp. sensor

*2


Engine coolant tem . sensorCompression pressureValve clearanceValve timing


Valve timingPCV hose connectionPCV hoseECM

P0325(DI87)

Knock Sensor 1 Circuit (Bank 1or Single Sensor)

Open or short in knock sensor circuitKnock sensor (looseness)ECM

P0335(DI90)

Crankshaft Position Sensor ACircuit

Open or short in crankshaft position sensor circuitCrankshaft position sensor

P0339(DI90)

Crankshaft Position Sensor ACircuit Intermittent

Crankshaft osition sensorSignal plate (Crankshaft position sensor rotor)ECM

P0340(DI93)

Camshaft Position Sensor ACircuit (Bank 1 or Single Sensor)

Open or short in camshaft position sensor circuitCamshaft position sensor

P0341(DI93)

Camshaft Position Sensor ACircuit Range/Performance(Bank 1 or Single Sensor)

Camshaft osition sensorCamshaft Jumping teeth of timing chainECM


280Author: Date:


P0351(DI95)

Ignition Coil A Primary/Second-ary Circuit

Ignition systemOpen or short in IGF and IGT1 circuit from ignition coil with

igniter ignition coil with igniterECM

P0352(DI95)

Ignition Coil B Primary/Second-ary Circuit

Ignition systemOpen or short in IGF and IGT 2 circuit from No. 2 ignition coil

with igniter to ECMNO. 2 ignition coil with igniterECM

P0353(DI95)

Ignition Coil C Primary/Second-ary Circuit



P0354(DI95)

Ignition Coil D Primary/Second-ary Circuit



P0401(DI101)

Exhaust Gas Recirculation FlowInsufficient Detected (Only for3RZFE)

Open in EGR gas temp. sensor circuitEGR gas temp. sensorVacuum or EGR hose disconnectedOpen or short in VSV circuit for EGRVSV for EGREGR systemEGR vacuum modulatorEGR valve stuck closedECM

P0402(DI111)

Exhaust Gas Recirculation FlowExcessive Detected (Only for3RZFE)

Short in EGR gas temp. sensor circuitEGR gas temp. sensorOpen in VSV circuit for EGRVSV for EGREGR valve stuck openECM

P0420(DI115)

Catalyst System Efficiency Be-low Threshold (Bank 1)

Gas leakage on exhaust systemA/F sensor (bank 1 sensor 1)Heated oxygen sensor (bank 1 sensor 2)Threeway catalytic converter

P0441(DI118)

Evaporative Emission ControlSystem Incorrect Purge Flow

Fuel tank cap incorrectly installedFuel tank cap cracked or damagedVacuum hose cracks, holed blocked, damaged or discon-

nectedOpen or short in vapor pressure sensor circuitVapor pressure sensorOpen or short in VSV circuit for EVAPVSV for EVAPOpen or short in VSV circuit for CCVVSV for CCVOpen or short in VSV circuit for pressure switching valveVSV for pressure switching valveFuel tank cracked, holed or damagedCharcoal canister cracked, holed or damagedFuel tank over fill check valve cracked or damagedECM

DIAGNOSTICS ENGINE (2RZFE, 3RZFE)DI19

281Author: Date:


P0442(DI151)

Evaporative Emission ControlSystem Leak detected (SmallLeak)

Fuel tank cap incorrectly installedFuel tank cap cracked or damagedHose or tube cracked, hole, damaged or loose sealVacuum hose cracked, holed, blocked, damaged or discon-

nectedFuel tank cracked, holed or damagedCharcoal canister cracked, holed or damagedOpen or short in vapor pressure sensor circuitVSV for CCVVSV for EVAPVSV for pressure switching valveVapor pressure sensorFuel tank over fill check valve cracked or damagedECM

P0446(DI118)

Evaporative Emission ControlSystem Vent Control Circuit Same as DTC No. P0441

P0450(DI165)

Evaporative Emission ControlSystem Pressure Sensor Mal-function Open or short in vapor pressure sensor circuit

V P0451

(DI165)Evaporative Emission ControlSystem Pressure Sensor Range/Performance

Vapor pressure sensorECM

P0456(DI151)

Evaporative Emission ControlSystem Leak detected (verysmall leak)

Same as DTC No. P0442

P0500(DI167) Vehicle Speed Sensor A

Combination meterOpen or short in No. 1 vehicle speed sensor circuitECMNo. 1 vehicle speed sensor

P0505(DI169) Idle Air Control System

PCV hose connectionPCV hoseOpen or short in IAC valve circuit

IAC l i t k l d

P0511(DI169) Idle Air Control Circuit

IAC valve is stuck or closedOpen or short in A/C switch circuitAir induction systemECM

P0560(DI173) System Voltage

Open in back up power source circuitECM

P0617(DI175) Starter Relay Circuit High

Short in Park/neutral position (PNP) switch (A/T) or Clutchstart switch (M/T) circuitPark/neutral position (PNP) switch (A/T)Clutch start switch (M/T) Ignition switchECM

P0705 *3(DI181)

Transmission Range Sensor Cir-cuit Malfunction (PRNDL Input)

Open in park/neutral position switch circuitPark/neutral position switchECM

P0724 *3(DI182) Brake Switch B Circuit High

Short in stop light switch signal circuitStop light switchECM

P0850 *3(DI181)

Park/Neutral Switch Input CircuitLow

Open in park/neutral position switch circuitPark/neutral position switchECM


282Author: Date:


P2195 *4(DI185)

Oxygen Sensor Signal StuckLean (Bank 1 Sensor 1)

Open or short in A/F sensor circuitA/F sensorA/F sensor heaterEFI main relay

P2196 *4(DI185)

Oxygen (Sensor Signal StuckRich (Bank 1 Sensor 1)

EFI main relayAir induction systemFuel pressure InjectorECM

P2237 *4(DI194)

Oxygen Sensor Pumping Cur-rent Circuit / Open (for A/F sen-sor) (Bank 1 Sensor 1)

Open or short in A/F sensor circuitA/F sensorA/F sensor heaterEFI main relay

P2A00(DI198)

A/F Sensor Circuit Slow Re-sponse (Bank 1 Sensor 1)

Open or short in A/F sensor circuitA/F sensorA/F sensor heaterEFI main relayAir induction systemFuel pressure InjectorECM

*1: .... MIL does not light up. .... MIL lights up *2: MIL lights up or blinks.*3: A/T only.*4: This DTC is related to A/F sensor is in a malfunction, although the detection item is oxygen sensor.

diagnostic trouble code chart

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