B1944 OBD-II Trouble Code: Airbag Crash Sensor #1 Ground Circuit Open

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the B1944 code

B1944 is a diagnostic trouble code (DTC) for "Airbag Crash Sensor #1 Ground Circuit Open". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE B1944 DIAGNOSTIC Get a fair and transparent estimate upfront

B1944 code definition

A B1944 code means that the vehicle’s onboard diagnostic system has detected a discrepancy in the airbag circuit that is consistent with a poor ground on the #1 sensor, and has registered a trouble code.

What the B1944 code means

Airbag systems are designed to perform self-diagnostics. In the event of a B1944 code, voltages are off spec and indicate a poor ground in the system, registering a trouble code as part of the self-diagnostic process.

What causes the B1944 code?

  • Open ground circuit in #1 crash sensor

What are the symptoms of the B1944 code?

How does a mechanic diagnose the B1943 code?

  • Using a good quality code reader/scanner, check for any airbag-related trouble codes. B1942. B1941, B1943 and B1945 may accompany this trouble code.
  • A factory wiring diagram will also be necessary for this diagnosis and repair.
  • With the ignition in ON position and headlamp switch OFF, connect the scanner and check for trouble codes.
  • Locate left front impact sensor. Check connectors, wiring and crimps for an intermittent problem. Perform a wiggle test. Check for any dirt, corrosion, damage or other physical problems with sensor, wiring, terminals and connectors.
  • Disconnect air bag diagnostic monitor and check resistance on terminals. Measure resistance of Pin C2-21, Circuit 6/18 (p/lg) to ground. NOTE: disconnecting the diagnostic monitor disables the entire airbag system.
  • If resistance is less than 3 ohms, remove the sensor’s mounting screws. Clean the mounting surface of sensor and chassis, reinstall sensor and tighten screws to spec.
  • If resistance is greater than 3 ohms, look for open circuit or high resistance in Circuit 618 (p/lg) and inspect all interconnections, including wire crimps.
  • Measure resistance between the sensor connector’s pink/orange and yellow/white wires.
  • Resistance should be less than 3 ohms. Locate and repair any open circuits found in #617 or #624.
  • If resistance is greater than 2 ohms, replace entire left front impact sensor.
  • Clear diagnostic codes and test drive vehicle to see if codes return.

Common mistakes when diagnosing the B1944 code

As with many codes, technicians often jump ahead on a B1944 code without doing a proper process of elimination and end up replacing parts unnecessarily. A poor reference ground can lead to a false B1944 reading, prompting unnecessary repairs.

How serious is the B1944 code?

A B1944 code can result in the airbag not deploying in the event of a collision.

What repairs can fix the B1944 code?

Additional comments for consideration regarding the B1944 code

On many Ford vehicles, the air bag warning light will flash to alert the driver to a problem. The light will flash an indication of the code itself. In this case, it would flash four times, followed by a pause, followed by four flashes to denote 44.

Any airbag-related work is complex and might be best left up to a professional. Accidental deployment of the airbag can result in serious injury.

Need help with a B1944 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

OBD-II
trouble codes
B1944

No more waiting rooms! Our mechanics will come to you to diagnose and fix the B1944 code.

SCHEDULE B1944 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


More related articles

P0757 OBD-II Trouble Code: Shift Solenoid B Stuck On
P0757 code means the PCM has registered an irregularity within the shift solenoid B often due too hydraulic blockages internally or malfunctioning.
P2627 OBD-II Trouble Code: O2 Sensor Pumping Current Trim Circuit Low Bank 1 Sensor 1
P2627 means there is a problem with the oxygen sensor for bank 1 due to malfunctioning sensor, faulty wiring, blown fuse, or leaking exhaust.
P0944 OBD-II Trouble Code: Hydraulic Pressure Unit Loss of Pressure
P0944 is defined as a loss of pressure/“prime” within the transmission’s hydraulic pump often due too failure of the transmission pump or blockages.

Related questions

Having trouble trying to locate my knock sensor. It's throwing a code for it. 1,2,4,5,6 cylinder misfires
As you may know a knock sensor may fail for any of the following reasons: The knock sensor is faulty and needs to be replaced There is a wiring open/short/fault in the knock sensor circuit The PCM/ECM has failed Any...
Engine light on. P000B Code
Hello. When this code comes up it is because the computer is not detecting that the camshaft is moving as it should when the variable valve timing system is functioning. This can be caused by a number of things. It...
eva PO597 engined coolant thermostat heater control circuit from obd diagnostic tool
Hi there. For the code P0597 (https://www.obd-codes.com/p0597) to appear, there is an issue with the engine cooling system. Check the harness to the thermostat housing and a good connection and make sure that there is corrosion. Check for any coolant...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com