Question about 2000 Volkswagen Jetta TDI

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P1256 what part do I need to replace

P1256 static no indication on display

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The coolant temperature sensor

Posted on Nov 22, 2013


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Posted on Jan 02, 2017


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16885 vehicle speed implausible signal P0501 static No indication on display?

This means your VSS, vehicle speed sensor is not sending voltage to the computer. Speed sensors must maintain a specified gap between the magnet and the ring. It is possible that the magnet is dirty or the wire is damaged, or the plug is dirty or loose. If its none of the mentioned then a bad wheel bearing will cause your speed sensor to fail. To check if it's the wheel bearing, jack the front wheels off the ground. Make sure to block the rear tires to prevent it from rolling. Grab your front tire at the 12:00 and 6:00 positions and try as hard as you can to wiggle the tire. If your tire has any movement in and out, then you must replace your wheel bearings. The speed sensor is built into the hub.

Mar 10, 2016 | 1997 Audi A4

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Saab code p1256

That code generally refers to a problem with the engine coolant temp sensor not giving the expected temperature to the computer within a specific amount of time if I remember correctly. I could be wrong but I think if you replace the thermostat the car will warm up faster and once you erase the code it shouldn't come back. Not a bad idea to replace that part anyway as part of regular maintenance and it could save your engine's life. Cheap part ($10-$15 bucks) and fairly easy to install on most vehicles. Might not be a bad idea to install a new temp sensor while you're at it, they do fail and are not very expensive either.

Jul 12, 2014 | 2002 Saab 9-3

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P1256 problem

Most likely the engine temperature sensor.

Nov 21, 2013 | 2000 Volkswagen Jetta TDI

1 Answer

2003 Chevy Avalanche won't start (incorrect gear indicator)

PRNDL Display
The instrument panel cluster (IPC) displays the selected gear position as determined by the powertrain control module (PCM). The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL display blanks if:
• The PCM detects a malfunction in the transmission range switch circuit.
• The IPC receives a class 2 message indicating the park position and the column park switch indicates a position other than park, open input.
• The IPC detects a loss of class 2 communications with the PCM.

Could be the transmission range sensor . Testing would need to be done , hooking up a scan tool ! Doing electrical testing etc...

Jul 06, 2017 | 2003 Chevrolet Avalanche

1 Answer

What is the code P1256? What part do I need to replace or pay attention?

From this website:
You can click on the VW symbol to get VW unique codes.
Unfortunately, it doesn't give much information on the problem, except:
P1256 Engine Coolant Temperature Sensor Open/Short To Positive
So it could be a bad temperature sensor, or a wiring problem?

Apr 13, 2011 | 2000 Volkswagen Jetta TDI

1 Answer

My mk3 1.8gl golf keeps stopping it has trouble code P1256 Engine Coolant Temp.Circ Open/Short to B+, fault is intermittent I have changed the temp sensor and fault still occurs what can I do next

The computer sends a 5 volt reference to the sensor. Then the sensor sends back a voltage reading from.5 to5. volts depending on the temperture of the engine. you can turn the car on and check for the 5 volt reference at the plug, If you have a three wire plug one wire will have 12+ volts, the other shoud have 5 volts. If you do not get the 5 volt, the you will have to check the wire for a break in the line, typically it happens at the can check continuity of both wires going to the computer. you should get a schematic of the wiring, it will make it easier, you have to pull the plugs from the sensor and computer and use an ohm meter to check continuity. if the wires check out the the short is in the computer. replace the computer, if the short is in the wire replace the wire by running a new one of the same gauge, this is easier than tearing apart the harness to find the short

Nov 16, 2010 | Volkswagen Golf Cars & Trucks

2 Answers

1997 Deville ac compressor locked out - low

70 psi static does need a charge.find compressor relay, jump relay and compressor will start. add refrigerant,replace relay and a/c should work fine

Apr 16, 2009 | 1997 Cadillac Eldorado

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