Question about Ford Ranger

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HELP!!! My CE light keeps coming on, and when I hook up the code reader it keeps giving me a code 33 EGR valve code. The truck is a 5 speed without an egr valve. I cleared the codes many times and it just comes back. what gives?

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  • glcs Apr 23, 2010

    This is a 1993 ford ranger WITHOUT an egr valve.

  • glcs Apr 23, 2010

    Talking with the local parts store some rangers with a standard transmission came through without an egr listed. This parts guy has been dealing parts for over 40 years

  • glcs Apr 23, 2010

    To the best of my knowledge the emissions sticker does not show egr, but I will check for federal. Thanks for the help so far.

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3 Answers

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  • Ford Master
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Fault code 33 means that the exhaust gas that flows into the upper intake when the EGR (Exhaust Gas Recirculation Valve) valve is opened is insufficient, or was not sensed during active test by system computer, the 1st thing to do is pull a vacuum on the EGR valve the engine should stall or nearly die, it will shake like crazy if EGR flow is ok, if this doesn't occur and the EGR valve was seen to pull open u will need to remove the EGR valve from the upper intake manifold and clean/clear the EGR exhaust gas passage in that manifold, they get full of carbon and sludge and then restrict the gas flow from the EGR and throw the fault code 33, most times a piece of stiff steel wire and carb cleaner with compressed air will do it, in the worst cases I have had to have the upper intake boiled out by a machine shop.

Posted on Apr 23, 2010

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  • Master
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If you do not have an EGR valve hooked up on this, it is going to keep coming up. Why does this truck not have an EGR valve?

Posted on Apr 23, 2010

  • Kori Policy
    Kori Policy Apr 23, 2010

    It is possible then that the engine has been replaced and a federal engine put. Check you emissions sticker and see what is listed on that sticker. This will give you exactly what is supposed to be on this vehicle and whether it is federal (49 state) or California emissions requirements.

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  • Master
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The code represents a problem with the valve. The EGR valve is either moving too slow or isn't moving at all. You need to find out if the valve is defective or isn't getting power. Because of the code that came up I think it is the valve.

Posted on Apr 23, 2010

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1 Answer

The computer is not allowing the egr solenoid to activate. vehicle sometimes run erratic and idles roughly. Code 41 comes up in addition to the codes 84 and 33 (related to egr.)


change your egr valve on the car and the problem should be rectified.
the egr valve exhaust gas recirculation valve send exhaust gase back to the inlet manifold to keep the air fuel fuel mixture at the right temp and the exhaust manifold from over pressurising.
if this fail seizes shut it stop the recirculation from happening yuo cant just clean them though they have to be replaced

May 27, 2010 | Ford Ranger Cars & Trucks

2 Answers

Hyundai santa fe 2001


Car error codes::


Diagnostic Trouble Code Storage Condition Remedy
P0100 Mass Air Flow Sensor Voltage High C-8
P0100 Mass Air Flow Sensor Voltage Low C-8
P0110 Intake Air Temperature Voltage High C-10
P0110 Intake Air Temperature Voltage Low C-10
P0115 Coolant Temperature Voltage High C-9
P0115 Coolant Temperature Voltage Low C-9
P0120 Throttle Position Sensor (TPS) Voltage High C-7
P0120 Throttle Position Sensor (TPS) Voltage Low C-7
P0130 O2 Sensor 1 Circuit Voltage High C-30
P0130 O2 Sensor 1 Circuit Voltage Low C-30
P0130 O2 Sensor 1 Open Circuit C-30
P0150 O2 Sensor 2 Circuit Voltage High C-31
P0150 O2 Sensor 2 Circuit Voltage Low C-31
P0150 O2 Sensor 2 Open Circuit C-31
P0201 Injector Valve 1 Voltage High C-20
P0201 Injector Valve 1 Voltage Low C-20
P0201 Injector Valve 1 Open Circuit C-20
P0202 Injector Valve 2 Voltage High C-21
P0202 Injector Valve 2 Voltage Low C-21
P0202 Injector Valve 2 Open Circuit C-21
P0203 Injector Valve 3 Voltage High C-22
P0203 Injector Valve 3 Voltage Low C-22
P0203 Injector Valve 3 Open Circuit C-22
P0204 Injector Valve 4 Voltage High C-23
P0204 Injector Valve 4 Voltage Low C-23
P0204 Injector Valve 4 Open Circuit C-23
P0205 Injector Valve 5 Voltage High C-24
P0205 Injector Valve 5 Voltage Low C-24
P0205 Injector Valve 5 Open Circuit C-24
P0206 Injector Valve 6 Voltage High C-25
P0206 Injector Valve 6 Voltage Low C-25
P0206 Injector Valve 6 Open Circuit C-25
P0230 Fuel Pump Relay Voltage High C-6
P0230 Fuel Pump Relay Voltage Low C-6
P0230 Fuel Pump Relay Open Circuit C-6
P0325 Knock Signal Circuit 1 C-26
P0330 Knock Signal Circuit 2 C-26
P0335 No Engine RPM Signal C-32
P0335 Incorrect RPM Signal C-32
P0340 Hall Sensor Voltage High C-15
P0340 Hall Sensor Voltage Low C-15
P0403 EGR Valve Voltage High C-28
P0403 EGR Valve Voltage Low C-28
P0403 EGR Valve Open Circuit C-28
P0410 Secondary Air Pump Voltage High C-27
P0410 Secondary Air Pump Voltage Low C-27
P0443 Fuel Tank Ventilation Valve Voltage High C-29
P0443 Fuel Tank Ventilation Valve Voltage Low C-29
P0443 Fuel Tank Ventilation Open Circuit C-29
P0500 Vehicle Speed Signal C-42
P0505 Idle Air Control Voltage High C-33
P0505 Idle Air Control Voltage Low C-33
P0550 Power Steering Voltage High C-14
P0550 Power Steering Voltage Low C-14
P0560 Battery Voltage High C-4
P0560 Battery Voltage Low C-4
P0602 Control Module Programming Error C-2
P1110 Intake Manifold Valve 1 Voltage High C-34
P1110 Intake Manifold Valve 1 Voltage Low C-34
P1111 Intake Manifold Valve 2 Voltage High C-35
P1111 Intake Manifold Valve 2 Voltage Low C-35
P1230 Power Supply Relay Secondary Circuit C-3
P1405 EGR Valve Feedb. Voltage High C-28
P1405 EGR Valve Feedb. Voltage Low C-28
P1405 EGR Valve Feedb. Incorrect Signal C-28
P1501 Immobiliser No or Wrong Coding C-5
P1502 Immobiliser No Signal C-5
P1503 Immobiliser Wrong Signal C-5
P1530 A/C Relay Voltage High C-41
P1530 A/C Relay Voltage Low C-41
P1600 Reprogram or Replace Electronic Control Unit (ECU) C-2
P1602 Knock Control Module; Replace ECU C-2
P1690 Check Light Voltage High C-43
P1690 Check Light Voltage Low C-43
P1690 Check Light Open Circuit C-43
P1740 Torque Control Voltage Low C-40
P1740 Continuous Torque Control C-40

These are the error codes:

Jul 08, 2008 | 2001 Hyundai Santa Fe

1 Answer

Engine light came on in my dodge caravan sxt 3.3L 6cyl. Code P0404. It seems to be running fine, how do I check the EGR valve myself? Any advice would be greatly appreciated.


To check the egr yourself you will need a hand held vacuum pump. To perform the test start the van and let it warm-up, then remove the top vacuum hose from egr valve and attach hand vacuum pump to egr valve. Apply about 5 in-hg vacuum to the egr valve. With the engine at idle speed and vacuum applyed the engine idle speed will drop or stall. If not then the egr valve is faulty and will need to be replaced. If the engine didi change idle speed and or stalled the egr valve is good. Hope this will help you.

May 17, 2010 | Cars & Trucks

1 Answer

What is the 1987 pontiac fiero gt v6 check engine light code list?


CODE 12- NO DISTRIBUTOR REFERENCE PULSES ECM. CODE 13- OXYGEN CIRCUIT. CODE 14- COOLANT SENSOR HIGH TEMP CODE 15- COOLANT SENSOR LOW TEMP. CODE 21 - THROTTLE POSITION SENSOR VOLTAGE HIGH.CODE 22 - THROTTLE POSITION SENSOR VOLTAGE LOW.CODE - 23 MIXTURE CONTROL SOLENOID.FOR CARBURETOR ENGINE. CODE 24 -VECHICLE SPEED SENSOR. CODE 32 - BARO CIRCUIT LOW.CODE 32 - FUEL INJECTED EGR VALVE VACUUM SWITCH SHORTED TO GROUND.OR EGR VALVE SOLENOID CIRCUIT OPEN. CODE 33 - MAP SENSOR.CODE 34 - VACUUM SENSOR OR MAP SENSOR.CODE 35 - IDLE SPEED CONTROL. CODE 41 - EST CIRCUIT. CODE 42 - ELECTRONIC SPARK TIMING.CODE 43 - ELECTRONIC SPARK CONTROL UNIT. CODE 44 - LEAN EXHAUST.CODE 45 - RICH EXHAUST. CODE 51 - PROM OR MEM CAL.CODE 52 - CALPAK. CODE 53 -EGR VALVE CARBURETED ENGINE THE EGR VALVE VACUUM SENSOR HAS RECEIVED IMPROPER EGR VACUUM. CODE 54 - M C SOLENOID CARBURETED ENGINE MIXTURE CONTROL SOLENOID SHORTED OR FAULTY ECM.CODE 54- FUEL INJECTED ENGINE FUEL PUMP VOLTAGE IS LOW.CODE 55 - ECM MAKE SURE PCM GROUND CONNECTIONS ARE TIGHT.IF OKAY.REPLACE THE ECM.

Mar 27, 2010 | 1987 Pontiac Fiero

1 Answer

I just did a code scan on my 1992 Chevy Cavalier RS 6-cylinder and the codes that came back were 32 and 33. What do they mean?


DTC - 32 EGR system failure
DTC - 33 MAP sensor circuit error (signal high indicating low vacuum)

The EGR failure is causing the DTC 33 code to show up. Check the vacuum lines to the EGR valve.

Good luck and keep me posted

Nov 19, 2009 | 1992 Chevrolet Cavalier

3 Answers

Engine lite stays on even after i changed egr valve


give me the code you had and will try to give u an answer, but sounds like the EGR passages may be plugged with carbon, common problem

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1 Answer

Service engine code indicates EGR valve.


You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.

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Error Code 406 EGR Positions Sensor


yes it is..you need to replace egr valve assembly..make sure you disconnect battery while replacing..some times fault will return even after replacing valve..

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You need to replace the dpfe sensor this will fix it.

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