B1255 Trouble Code

View B1255 obd/2 error code description and symptoms. B1255 engine photo

Low Speed Fuel Pump Primary Circuit Malfunction The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM.
The test fails if: When the LFP circuit is commanded on (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is commanded off, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage coming through the low speed fuel pump relay coil to the LFP circuit). Open or shorted low fuel pump (LFP) circuit Open VPWR to low speed fuel pump relay Damaged low speed fuel pump relay Damaged PCM An open circuit or short to ground can only be detected with the low speed fuel pump.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

Difficulty Level (Expert)
Level

Repair Time (60 Min.)
Time

Cost Prediction : $ 35-120

B1255 Error Code Repair Process :

The scent may B1255 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such B1255, so if the inside of your car b1255 air temperature external sensor circuit open as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

B1255 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Common Causes of B1255

A common cause of code B1255 is the failure of B1255 Air Temperature External Sensor Circuit Open, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Faulty Fuel injector
Faulty starter motor
Faulty TCM or TCM programming

B1255 code for all cars

You can view according B1255 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+B1255 Holden Senator

+B1255 Hyundai Concept

+B1255 Wiesmann Gt

+B1255 Chery A3

+B1255 Thames 60

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