# B1905 short in p/t right hand circuit 2012 Scion tC

**URL:** <https://community.cartalk.com/t/b1905-short-in-p-t-right-hand-circuit-2012-scion-tc/172269>\
**Category:** Maintenance/Repairs\
**Tags:** scion, toyota\
**Created:** [November 13, 2020, 7:08pm UTC](https://community.cartalk.com/t/b1905-short-in-p-t-right-hand-circuit-2012-scion-tc/172269 "2020-11-13T19:08:39Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Lizzy-11](https://avatars.discourse-cdn.com/v4/letter/l/b9bd4f/32.png) [@Lizzy-11](https://community.cartalk.com/u/Lizzy-11)\
**Post date:** [November 13, 2020, 7:08pm UTC](https://community.cartalk.com/t/b1905-short-in-p-t-right-hand-circuit-2012-scion-tc/172269/1 "2020-11-13T19:08:39Z")

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wondering what this code is and what to do next? accident was on the driver side only steering wheel and knee air bag deployed there. nothing on passenger side. module was also reset and this code is persisting

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [November 13, 2020, 7:43pm UTC](https://community.cartalk.com/t/b1905-short-in-p-t-right-hand-circuit-2012-scion-tc/172269/2 "2020-11-13T19:43:07Z")

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The code indicates an error in the air bag crash sensor.

> **[B1905 OBD-II Trouble Code: Air Bag Crash Sensor #2 Feed/Return Circuit Short...](https://www.yourmechanic.com/article/b1905-obd-ii-trouble-code-air-bag-crash-sensor-2-feed-return-circuit-short-to-battery-by-brady-klopfer)**
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> B1905 code definition The B1905 trouble code suggests an error with the airbag crash sensor #2 circuit. What the B1905 code means The B1905 code is a generic OBD-II trouble code that detects a circuit problem from the #2 airbag...

Tester

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [November 13, 2020, 8:08pm UTC](https://community.cartalk.com/t/b1905-short-in-p-t-right-hand-circuit-2012-scion-tc/172269/3 "2020-11-13T20:08:01Z")

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B1905; Short in left seat belt pretensioner squib. The drivers seat belt pretensioner has deployed, the seat belt must be replaced.

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**Author:** ![Lizzy-11](https://avatars.discourse-cdn.com/v4/letter/l/b9bd4f/32.png) [@Lizzy-11](https://community.cartalk.com/u/Lizzy-11)\
**Post date:** [November 13, 2020, 9:08pm UTC](https://community.cartalk.com/t/b1905-short-in-p-t-right-hand-circuit-2012-scion-tc/172269/4 "2020-11-13T21:08:41Z")

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It’s saying passenger side

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [November 13, 2020, 9:45pm UTC](https://community.cartalk.com/t/b1905-short-in-p-t-right-hand-circuit-2012-scion-tc/172269/5 "2020-11-13T21:45:07Z")

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It? This is from Toyota’s diagnostic procedure;

**DTC**

**B1905/74**

**Short in Front Pretensioner Squib LH Circuit**

- **The center airbag sensor detects a line short circuit signal 5 times in the front pretensioner squib LH circuit during the primary check.**

“LH” is left hand. Since the drivers airbag was deployed it makes sense that the drivers seat belt pretensioner has also been deployed.

For your car B1900 is for the passenger beat belt. If you search these faults you will find that most Toyotas are B1900 for the drivers side, B1905 for the passenger, can’t explain why yours is the opposite.