I have check engine on in my toyota 94 4runner

Question edited for the ACTUAL name of your truck 'dyina' to Dyna. :>D

Connect a Code Reader Scan Tool. That will tell you the Code and the Code will tell the issue and the fix. It is no use guessing!

Toyota Dyna Engine codes - ProxyParts.com

https://www.proxyparts.com > ... > Engine code finder
Enter the car make and car model for which you want to see an overview of engine codes. In the overview, you will then get a list of the engine codes with the ...

Toyota OBD/OBD2 Codes - TroubleCodes.net

https://www.troublecodes.net > toyota
Common Toyota OBD2 Codes · 1. P0302, Misfire Detected - Cyl. · 2. P0303, Misfire Detected - Cyl. · 3. P0304, Misfire Detected - Cyl. · 4. P0305, Misfire Detected - ...

Toyota Engine Trouble Codes & Diagnostics

https://parts.olathetoyota.com > toyota-engine-trouble-c...
Long list of engine trouble codes and diagnostic info. ... The P0441 OBD-II code is relatively rare (at least for Toyotas). It indicates an Evaporative ...

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How many litres of oil for toyota voxy 2.0 engine Kufa, 4.2L of oil with a filter or 4.0L without filter change.
Check the attached links,instruction and guides, Good luck
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Toyota VOXY Solving Car Problems

Toyota Noah Voxy 2001 2007 Guide to repair and maintenance Page 4 Catalog...

http://autorepman.com/en/toyota/3422-toyota-noah-voxy-2001-2007-engine-repair-manual.html

Not all failures will make check engine light come on, so run basic troubleshooting--is there spark? Correct fuel pressure? Timing belt broken? Compression?

check engine light on means something wrong with engine,
you can use this tool check your toyota and clear the fault codes.

Toyota Avalon 2006 vsc, skid light and check engine light on. Codes P0031, P0038 and code ,P2238

fuel fault o2 sensor putting check engine light on? running rich and lean check for codes get back to me

You need to have the codes read to see what caused it, Autozone will read the codes for free.

Manufacturer Specific Codes

P1100 BARO Sensor Circuit - Read Our Article on Automotive Circuit Testing For Help With This Toyota Check Engine Light Code

P1120 Accelerator Pedal Position Sensor Circuit - Read Our Article on Automotive Circuit Testing For Help With This Toyota Check Engine Light Code

P1121 Accelerator Pedal Position Sensor Range/Performance Problem

P1125 Throttle Control Motor Circuit - Read Our Article on Automotive Circuit Testing For Help With This Toyota Check Engine Light Code

P1126 Magnetic Clutch Circuit

P1127 ETCS Actuator Power Source Circuit

P1128 Throttle Control Motor Lock

P1129 Electric Throttle Control System

P1130 Air/Fuel Sensor Circuit Range/Performance (Bank 1 Sensor 1) - Read Our Article On Oxygen Sensor Codes For Help With This Toyota Check Engine Light Code - More Related Information

P1133 Air/Fuel Sensor Circuit Response (Bank 1 Sensor 1) - Read Our Article On Oxygen Sensor Codes For Help With This Toyota Check Engine Light Code

P1135 Air/Fuel Sensor Heater Circuit Response (Bank 1 Sensor 1) - Read Our Article On Oxygen Sensor Codes For Help With This Toyota Check Engine Light Code - More Related Information

P1150 Air/Fuel Sensor Circuit Range/Performance (Bank 1 Sensor 2)

P1153 Air/Fuel Sensor Circuit Response (Bank 1 Sensor 2) - Read Our Article On Oxygen Sensor Codes For Help With This Toyota Check Engine Light Code

P1155 Air/Fuel Sensor Heater Circuit. (Bank 1 Sensor 2)

P1200 Fuel Pump Relay Circuit

P1300 Igniter Circuit Malfunction - No. 1

P1305 Igniter Circuit Malfunction - No. 2

P1335 No Crankshaft Position Sensor Signal - Engine Running

P1349 VVT System

P1400 Sub-Throttle Position Sensor

P1401 Sub-Throttle Position Sensor Range/Performance Problem

P1405 Turbo Pressure Sensor Circuit

P1406 Turbo Pressure Sensor Range/Performance Problem

P1410 EGR Valve Position Sensor Circuit Malfunction - Read Our Article on EGR Valve Codes For Help With This Toyota Check Engine Light Code

P1411 EGR Valve Position Sensor Circuit Range/Performance - Read Our Article on EGR Valve Codes For Help With This Toyota Check Engine Light Code

P1500 Starter Signal Circuit

P1510 Boost Pressure Control Circuit

P1511 Boost Pressure Low

P1512 Boost Pressure High

P1520 Stop Lamp Switch Signal Malfunction

P1565 Cruise Control Main Switch Circuit

P1600 ECM BATT Malfunction

P1605 Knock Control CPU

P1630 Traction Control System

P1633 ECM

P1652 Idle Air Control Valve Control Circuit

P1656 OCV Circuit

P1658 Wastegate Valve Control Circuit

P1661 EGR Circuit

P1662 EGR Bypass Valve Control Circuit

P1700 Vehicle Speed Sensor '2' Circuit Fault

P1705 Direct Clutch Speed Circuit Fault

P1765 Linear Shift Solenoid Circuit Fault

P1780 Park/Neutral Position Switch Malfunction (Only For A/T)

Back To Top Of Toyota Check Engine Light Codes Page

http://www.troublecodes.net/Toyota/

List of Codes for OBD-I

keep on :-)