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Lectric XP4, XPeak 2 and XP Trike 2: E003 pedal assist sensor fault

E003 on the XP4, XPeak 2 and XP Trike 2 is a PAS sensor fault. Check the PAS quick plug first, then the sensor and magnet ring at the crank, before replacing the sensor.

Last edited Nov 8, 2026 by Pedalwise team Edit History Add a subpage

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Your Lectric XP4, XPeak 2 or XP Trike 2 shows E003 and pedal assist stops working or comes and goes. The error tables in Lectric's XP4 manual, XPeak 2 manual and XP Trike 2 manual all list E003 as a PAS sensor fault, with checking the PAS quick plug as the most common solution. The pedal assist sensor (PAS) tells the controller that you are pedaling. The short answer: reseat the PAS quick plug, clean and inspect the sensor at the crank, and replace the sensor only if those don't help.

This page touches sensor wiring to the controller. Power off and turn the battery key off before any check, and leave anything past plugs and cleaning to a shop. Lectric's XP Trike 2 manual says not to open parts like the display or PAS sensor yourself.

Most likely cause

Lectric's own fix is the PAS quick plug. Its quick plug guide says every part, including the PAS sensor, connects to the controller through a quick plug, and these plugs carry the signals. A plug that has worked loose, or has dirt or moisture inside, stops the signal. Upway's PAS sensor repair guide adds the next most common causes: a sensor that has moved out of line with its magnet ring, damaged or missing magnets, dirt on the sensor, and loose or damaged wiring.

Other causes to rule out

  • A brake lever that isn't fully returning, so the brake cutoff keeps motor power off. (Upway)
  • Water in a connector. Lectric's water resistance article lists IP ratings for these models but also says the electrical parts are not waterproof. See e-bike got wet.
  • A controller fault, which Upway says needs a professional. On these bikes a controller fault has its own code, E009. (XP4 manual)
  • Codes differ between models. Lectric's XPress and XP Lite 2.0 manuals also list E003 as PAS, but they use other numbers for throttle and display faults, so always read your own manual's table.

How to confirm

  1. Note the code. Check that an assist level is set: ECO to TURBO on the XP4, or 1 to 5 on the XPeak 2, as each manual says.
  2. Test pedal assist without touching the throttle, then the throttle without pedaling. The manuals suggest this to tell the two apart.
  3. Power off. Find the PAS quick plug by following the cable from the sensor at the crank. You may need to remove some plastic wrap, per Lectric.
  4. Pull the plug straight out without twisting, look inside both halves, then push it back with the arrows lined up until fully seated.
  5. Look at the sensor and magnet ring behind the crank. Wipe off dirt gently (no pressure washer, as Upway warns) and look for cracks, missing magnets or a sensor that has shifted.
  6. Squeeze and release both brake levers and make sure each springs back fully.
  7. If E003 stays, contact Lectric support before visiting a shop, as Lectric's service network page asks.

Fix options

Reseat the PAS quick plug (easy)

Lectric's first fix and often all it takes.

Clean or realign the sensor and magnet ring (easy to moderate)

Upway says the sensor should sit just short of the magnets and line up with the ring. A cracked ring is replaced.

Replace the PAS sensor (moderate)

Upway calls cadence sensors inexpensive and fairly easy to swap, and torque sensors harder and costlier, and suggests a professional diagnosis first. Lectric's parts page shows mostly batteries and chargers, so ask Lectric support for the correct sensor.

Controller (pro)

Only if a shop rules out the sensor and wiring.

Parts

  • E-bike connectors
  • Pedal assist sensor (and magnet ring, if cracked)
  • E-bike controller (pro only)

Videos

Lectric Service Center: Pedal Assist Sensor Install from Lectric eBikes: Lectric techs fit a new pedal assist sensor at the crank and plug it back in, the usual fix once a loose or damaged sensor is behind an E003.

When to get a pro

Get help for a damaged cable, water in a plug, or E003 that stays after the checks. See no pedal assist, Lectric eBikes troubleshooting and when to call a pro.

Sources

Stuck after these checks? Find a shop near you.

Need a pro?

If these steps didn't fix it, find a shop near you in our partner network. For battery or wiring trouble, look for shops marked Battery and electrical.

Talk

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