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Engine code p0645 - 2002 Chrysler PT Cruiser

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Chevy traverse 2010 air conditioning button blinks then shuts off. What could be causing this??


Have it checked for DTC'S -diagnostic trouble codes . That will tell you what's up . Dealer or someother qualified repair shop .
DTC P0532: Air Conditioning A/C Refrigerant Pressure Sensor Circuit Low Voltage
DTC P0533: Air Conditioning A/C Refrigerant Pressure Sensor Circuit High Voltage
DTC P0645: A/C Clutch Relay Control Circuit
Circuit System Description
When the A/C switch is pressed, the HVAC control module sends a serial data message to the ECM. This input will request the engine control module (ECM) to ground the A/C compressor clutch relay control circuit, which will switch the A/C CMPRSR CLUTCH relay on. With the relay contacts closed, battery voltage is supplied to the A/C compressor clutch assembly.

DTC B0228 02 : Recirculate Position Feedback Circuit Short to Ground
DTC B0228 05 : Recirculate Position Feedback Circuit Short to Battery or Open
DTC B0228 61 : Recirculate Position Circuit Actuator Stuck
DTC B0413 02 : Temperature Control 1 Feedback Circuit Short to Ground
DTC B0413 05 : Temperature Control 1 Feedback Circuit Short to Battery or Open
DTC B0413 61 : Temperature Control 1 Feedback Circuit Actuator Stuck Open
DTC B0423 02 : Temperature Control 2 Feedback Circuit Short to Ground
DTC B0423 05 : Temperature Control 2 Feedback Circuit Short to Battery or Open
DTC B0423 61 : Temperature Control 2 Circuit Actuator Stuck

Jun 28, 2017 | Cars & Trucks

1 Answer

Ac and cruise problem 04 caravan working intermittent also gives codes p0645 and p0582


Had a car with same problem. Was temperature sensor. Do you know how to check relays? And do you know how to use paper clip and jump relay switch in fuse box? You need to jump relay to make sure air compressor is working to fill with freon.

Jul 11, 2016 | 2004 Dodge Caravan

2 Answers

Air condioning


Hi there, I'm AL the owner of Big As Auto Repair in St Charles Mo

Several things can cause an A/C Blower motor to not run. (1) The mostly likely and mostly found issue is the "Blower Resister" behind the glove box. I would start by replacing that first. (2) I've also found a blown 30 amp fuse blown because of a shorted blower motor and at time just a bad motor itself. (3) Not very likely because not found very often but through the years have found a bad blower switch. In this case the control head will need to be replaced. Please send your friends and family to my website for a special I'm running this year 2015 for A/C repairs. Click Here: Auto Repair

Jul 06, 2014 | 2004 Jeep Grand Cherokee

1 Answer

1999gmcjimmy diagram for vacuum hose


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Engine vacuum schematic-1994 4.3L (VIN Z) engines, California models with a M/T (Code TDK)


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Engine vacuum schematic-1994 4.3L (VIN Z) engines, California models with M/T (Code TLM)


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Engine vacuum schematic-1994 4.3L (VIN Z) engines, California models (Code TFL)


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Engine vacuum schematic-1994 4.3L (VIN Z) engines (Code TFN)


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Engine vacuum schematic-1994 4.3L (VIN Z) engines, California models with M/T (Code TCY)


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Engine vacuum schematic-1994 4.3L (VIN Z) engines (Code TCU)


Hope helps, keep us updated and remember to rate this answer.








Aug 10, 2011 | 1998 GMC Jimmy

2 Answers

What does the code p0442,p0456,p0700,p0645,p0481,p0340


CODE PO442 - EVAP SMALL LEAKED DETECTED. CODE PO456 - LEAK IN EVAP SYSTEM DETECTED. POSSIBLE CAUSES / VACUUM HOSE CONNECTIONS OR SWITCHES HAVE COME LOOSE OR MALFUNCTION / EVAP EMISSION SYSTEM HAS A LEAK / EVAP PURGE SOLENOID OPERATION HAS MALFUNCTION / NVLD SWITCH OPERATION HAS MALFUNCTION / CODE PO 700 - AUTOMATIC TRANSMISSION FAULT DETECTED .POSSIBLE CAUSE TRANSMISSION CONTROL MODULE RELATED SENSOR HAS SOLENOID IS DAMAGED OR HAS FAILED.TRANSMISSION CONTROL MODULE FAILED OR POWER CONTROL MODULE HAS FAILED.YOU TAKE VECHICLE TO DEALERSHIP THEY WILL TO SCAN TRANSMISSION. CODE PO645 - AC CLUTCH RELAY CIRCUIT MALFUNCTION . POSSIBLE CAUSE.INTERNALLY FUSED IGNITION SWITCH OUTPUT CIRCUIT IS FAULTY. AC RELAY CLUTCH CONTROL CIRCUIT IS OPEN OR IT IS SHORTED TO GROUND. AC RELAY CLUTCH POWER SUPPLY FUSED IGNITION CIRCUIT IS OPEN. AC RELAY IS DAMAGED OR IT HAS FAILED.PCM HAS FAILED. CODE PO481 - HIGH SPEED NUMBER 2 FAN RELAY CONTROL CIRCUIT. POSSIBLE CAUSE HI FAN RELAY POWER CIRCUIT IS OPEN FROM THE RELAY TO FUSED POWER.HI FAN CONTROL CIRCUIT IS OPEN OR SHORTED TO CHASIS GROUND. FAN RELAYS FAILED. PCM HAS FAILED. CODE PO340 - NO CAMSHAFT POSITION SENSOR CIRCUIT FAILURE. POSSIBLE CAUSE CMP SENSOR CONNECTOR IS DAMAGED OPEN OR IT IS SHORTED. CMP SENSOR SIGNAL CIRCUIT IS OPEN OR SHORTED TO GROUND OR TO BATTERY VOLTAGE OR 5 VOLT SUPPLY CIRCUIT. CMP SENSOR 5 VOLT SUPPLY CIRCUIT IS OPEN OR SHORTED TO GROND OR TO BATTERY VOLTAGE. CMP SENSOR GROUND CIRCUIT IS OPEN. CKP SENSOR IS DAMAGED OR HAS FAILED.PCM HAS FAILED. SOUND LIKE PROBLEM IS PCM GROUND WIRE BROKEN OR LOOSE OR PCM HAS FAILED.

Nov 16, 2010 | 2004 Dodge Intrepid

1 Answer

Van clicks instead of starting, p0645 maybe


the code is for a ac clutch relay you may have a short in the relay check in the relay block under the hood it has labels to tell you which relay it is. Most likely this has caused your battery to be drained.

Nov 08, 2010 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

Ford 2008 Exedition code P0645. Dealer says I need a PCM


P0645=A/C Clutch Relay Control Circut, This is the code, how it affects your vehicle I do not know, I take it your a/c does not work? Hope this helps.

Aug 02, 2010 | 2008 Ford Expedition

1 Answer

What does codes p0645 and p0481 mean on a 2004 dodge intrepid?


P0645 A/C Clutch relay circuit

P0481 high speed fan control relay circuit

Jan 19, 2009 | 2004 Dodge Intrepid

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