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Troubleshooting

Dash Display

FST Platform/Instrument Cluster/Troubleshooting

System Warning Sequences

This is a quick lookup for the red sequences flashed by the dash System Warning Indicator (a red triangle with an exclamation mark within it).

These are derived from the Official Owners Manual only for roadside reference and owner community annotations and links.

Overview

The red indicator light in the lower part of the display sometimes will flash a repeating sequence.

The Official Owners Manual lists what they mean, usually related to system startup.

Often enough, keying the bike off and on is the way to re-test.

System Warning Troubleshooting

  1. Toggle the Instrument Cluster's Display A to show Error Codes.
  2. Check the corresponding Error Codes

Some will be expected like kickstand down based on your context.

Focus on topical system errors related to the System Warning. 3. Attempt a basic reboot: 1. Charging: disconnect the external power source from the vehicle. 2. Key the bike off. 3. Wait several seconds or a minute in length depending on severity of the error. 4. Key the bike on, checking for a normal startup sequence, contactors closing, and no errors. 4. If the System Warning persists, and it is related to the BMS, perform a BMS Reset Procedure (soft and then hard reset). 5. If the System Warning persists, attempt to extract MBB logs.

Urgent/Roadside: Email logs to yourself, then decode using a log parser.

Non-Urgent or Important: Email logs to Zero. 6. If no clear resolution is at hand, contact Zero and/or your local dealer to schedule servicing.

# Blinks Description Cause Guidance
1 ············ Fast constantly Safety Override is Active
〃 · · · · · · · · Fast intermittently BMS Isolation Fault Check the BMS Isolation Fault section of the manual
Moisture and/or dirt are the most likely culprits.
〃 — = 1 long
- Charge Indicator blinking fast constantly
- or all blinking dash segments		 Charger Not Charging Probably a CAN Error
Unplug the bike and wait a minute to re-engage
〃 — 1 long Cutout switch engaged or Kickstand Switch Disabled Disengage the cutout switch and/or raise the kickstand.
2 ·· 2 short Self-test failed
3 ·   ··· 1 short, then 3 short High Throttle Disable The throttle signal is abnormally high or disconnected.
See Error Code 1: Check throttle rotation and connections.
4 ·   ···· 1 short, then 4 short Precharge Fail See Error Code 27.
5 ·   ····· 1 short, then 5 short Low Power Pack Disable See Error Code 7: Battery voltage is too low to operate
Charge slowly as soon as possible.
6 ··   · 2 short, then 1 short Contactor Error See Error Codes related to the Contactor.
7 ··   ·· 2 short, then 2 short Charger Error See Error Codes related to the Charger.
8 ··   ··· 2 short, then 3 short CAN Error
9 ··   ···· 2 short, then 4 short BMS Throttle Disable See Error Codes related to the Throttle.
10 ··   ····· 2 short, then 5 short Module Variance Too High See Error Code 32
11 ···   ··· 3 short, then 3 short Battery Temperature Sensor Fault See Error Code 18: A temperature sensor failure reduces safety; arrange a dealer visit.
Not urgent to fix unless other battery problems are apparent from logs/etc.
12 ····   · 4 short, then 1 short Contactor Welded See Error Code 26
13 ····   ··· 4 short, then 3 short Motor Controller Error See Error Codes related to the Controller.
14 ····   ···· 4 short, then 4 short Loopback Error See Error Code 35
Reconnect either an expected second battery module or Power Tank, if present.
Otherwise, reconnect the blanking plug.
15 ·····   · 5 short, then 1 short BMS Startup Error
16 ·····   ·· 5 short, then 2 short BMS Internal Disable
17 ·····   ··· 5 short, then 3 short BMS Internal Fault
18 ·····   ····· 5 short, then 5 short Miscellaneous Error

Error Codes

Code Message CEL Description (official) Community Notes
0 N/A No error; should never be visible
1 High Throttle Throttle fault Likely throttle connection or potentiometer issue
2 Torque Fault ⓧ No valid torque input provided from the Bosch MSC. The Bosch MSC (stability control) system isn't sending a valid input.
3 Torque Fault ⓧ Torque fault Torque fault not due to the Bosch MSC?
4 Throttle Fault ⓧ Throttle Fault The Bitron Throttle isn't sending a valid input.
5 CAN Fault ⓧ Powertrain CAN Communication Fault CANbus messaging between the MBB, motor controller, and maybe other components is faulty.
6 Mode Fault ⓧ Reinstall Ride Modes through Smartphone App. Something about how the ride modes are mapped into the MBB and [[FST Platform/Motor Controller|motor controller] is inconsistent or invalid.
7 Mode Fault ⓧ Reinstall Ride Modes through Smartphone App. Something about how the ride modes are mapped into the MBB and [[FST Platform/Motor Controller|motor controller] is inconsistent or invalid.
8 Controller Fault Motor Controller Warning. Something about [[FST Platform/Motor Controller|motor controller] operation is worth investigating but not necessarily urgent.
9 Controller Fault ⓧ Motor Controller Fault. Something about [[FST Platform/Motor Controller|motor controller] operation is seriously wrong.
10 Mode Fault Reinstall Ride Modes through Smartphone App. Something about how the ride modes are mapped into the MBB and [[FST Platform/Motor Controller|motor controller] is inconsistent or invalid (but not urgent).
11 N/A No error; should never be visible
12 Traction Control Fault Traction Control Fault Something about the traction control system is wrong.
13 Traction Control Fault Traction Control Fault, Communication error. Something about the traction control system messaging (CANbus?) is wrong.
14 N/A No error; should never be visible
15 Stability Control Fault Stability Control Fault Something about the Bosch MSC system is wrong.
16 Headlight Short Fault Headlight Connection Short. Implies the MBB has a headlamp operation sensor.
17 Headlight Bulb Out Fault Headlight Connection Open. Implies the MBB has a headlamp operation sensor.
18 Blinker Short Fault Blinker Connection Short. Implies the MBB has a blinker operation sensor.
19 Blinker Bulb Out Fault Blinker Connection Open. Implies the MBB has a blinker operation sensor.
20 Brake Short Fault Brake Connection Short. Implies the MBB has a brake light operation sensor.
21 Brake Bulb Out Fault Brake Connection Open. Implies the MBB has a brake light operation sensor.
22 12V Battery Heater Short Fault 12V Battery Heater Connection Short.
23 12V Battery Heater Disconnect Fault 12V Battery Heater Connection Open.
24 12V Battery Reversed 12V battery installed in reverse.
25 12V Battery Low 12V battery low.
26 DC-DC Low DC-DC converter voltage low.
27 12V Low Voltage Fault 12V system fault.
28 12V Low Voltage Fault 12V system fault.
29 HVIL Open Fault Loose connection detected in power pack harness.
30 Self test Fail Disconnect charger. Key Off for 2 minutes and then try again.
31 Battery Module Ineligible Disconnect charger. Key Off for 2 minutes and then try again.
32 Contactor Open Disconnect charger. Key Off for 2 minutes and then try again.
33 Battery Module Awaiting Connection Disconnect charger. Key Off for 2 minutes and then try again.
34 Battery Module Connection Retries Fault Disconnect charger. Key Off for 2 minutes and then try again.
35 Pilot Signal Invalid Fault Charging station error. Disconnect Charging Pistol, wait for 2 minutes then retry.
36 Region Invalid Fault Charger region uninitialized.
37 Charger Not Connected CAN Communication Fault.
38 Charger Fault Disconnect Charging Pistol, wait for 2 minutes then retry.
39 Immobilizer Disconnected CAN Communication Fault.
40 Immobilizer Error Try Reprogramming Keys.
42 Heated Grip Fault Heated Grip Fault.
43 Isolation Fault Refer to dealer.
49 Battery Module Incompatible Battery installed is not compatible with this motorcycle.
50 Battery Module Features Not Supported Module installed is either newer or older than this motorcycle. Some features may not be available.
51 Battery Pack Voltage Too High Charging paused.
52 Battery pack Voltage Too Low Refer to dealer.
54 Battery Cell Anomaly Please charge motorcycle.
58 - 99 Motorcycle Fault Refer to dealer.
The motorcycle's diagnostic system detected an error code that has caused the motorcycle to enter into a state of permanent torque reduction. The Check Engine Light (CEL) on the dash will also illuminate when any of these errors is detected.

Isolation Faults

FST Platform/Isolation Faults

Using Mobile App

See the Official Mobile Application article.

Diagnostics

Source: zeromanual.com/wiki/FST_Platform/Unofficial_Service_Manual · Wayback capture of 2025-05-17 · wiki last edited 2 May 2020 00:04. Community-written content from the Unofficial Zero Manual, reproduced for preservation; not written or verified by OpenZero. Links to pages that were not mirrored go to the Wayback Machine.