diff --git a/docs/device/error-codes.md b/docs/device/error-codes.md
index 47df4d6b..4190ee5a 100644
--- a/docs/device/error-codes.md
+++ b/docs/device/error-codes.md
@@ -10,6 +10,8 @@ Below is a list of error numbers and what they mean:
 * **40** (`MICROBIT_NULL_DEREFERENCE `): there was a NULL dereference, the @boardname@ tried to manage a invalid object pointer.
 * **42** (`MICROBIT_SYSTEM_ERROR`): there's an error condition in the @boardname@ system software.
 * **43** (`MICROBIT_NO_RADIO`): the @boardname@ can't enable the radio.
+* **50** (`MICROBIT_HARDWARE_UNAVAILABLE_ACC`): an error occurred with the micro:bit's accelerometer component.
+* **51** (`MICROBIT_HARDWARE_UNAVAILABLE_MAG`): an error occurred with the micro:bit's magnetometer component.
 * **98** (`MICROBIT_ASSERTION_FAILED`): assertion failed, the condition in an [assert](/reference/control/assert) was false.
 
 ```sim
@@ -24,4 +26,5 @@ basic.showLeds(`
 
 ## See also
 
+[Support](https://microbit.org/guide/hardware/error-codes/),
 [panic](/reference/control/panic), [assert](/reference/control/assert),