Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / U1325 — Fault: absence of communication with the gyrometer-accelerometer sensor: No signal

U1325 — Fault: absence of communication with the gyrometer-accelerometer sensor: No signal

Detailed page for trouble code U1325.

32,287codes
58brands
9,833generic
22,454specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

U1325

PEUGEOT U — Network/User

Fault: absence of communication with the gyrometer-accelerometer sensor: No signal

Brand: PEUGEOT
Type: U — Network/User
Views: UK: 0 EN: 0 RU: 0
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty gyrometer-accelerometer (IMU) sensor
  • Open, shorted or corroded wiring or connector between sensor and control module/CAN bus
  • Loss of sensor power or ground (blown fuse, ignition supply fault, poor ground)
  • CAN/LIN bus fault (missing termination, high resistance, short to battery/ground)
  • Intermittent connector contact (water ingress, vibration damage)
  • Control module (ECU) software or hardware fault

Symptoms

  • Related stability control/ESP, ABS or ADAS warnings on dash
  • Loss of functions that depend on accelerometer/gyro data (e.g., ESP, rollover detection, automatic braking)
  • Logged communication fault(s) in diagnostic memory
  • Intermittent or permanent warning lamps depending on fault continuity

What to check

  • Read and record all stored fault codes and freeze frame data with a capable diagnostic tool
  • Check battery voltage and charging system; low voltage can cause bus/timeouts
  • Visually inspect sensor location, connector, and harness for damage, moisture, or corrosion
  • Verify fuses related to the sensor and related control modules
  • Using a scan tool, observe live data for the IMU — check if any packets/messages or sensor values are present
  • Check CAN high/low voltages at a known-good point and at the sensor connector with ignition ON

Signal parameters

  • Sensor supply: ignition-switched battery feed to sensor; internal regulator typically provides 3.3V–5V to measurement electronics (verify for vehicle model)
  • Ground: low-resistance chassis ground at sensor connector
  • Communications: sensor typically transmits over vehicle network (CAN or manufacturer serial). Expect CAN H/L idle ≈ 2.5 V each; dominant state changes when messages present
  • Message frequency: IMU/broadcast messages commonly tens to a few hundred Hz depending on function (stability/ADAS require frequent updates)
  • Data content: linear acceleration (g), angular rate (deg/s or rad/s) — values should change with vehicle motion; static values near zero when stationary
  • If sensor provides analog outputs on this vehicle, expect voltage proportional to axis acceleration (verify OEM spec)

Diagnostic algorithm

  1. Connect a full-function diagnostic scanner. Record U1325 plus any other codes. Note freeze frame/live data.
  2. Check battery voltage (key ON) and relevant fuses/relays. Low or unstable supply can cause timeouts.
  3. Perform a visual inspection of the IMU and harness for damage, moisture, or poor pins. Repair any physical faults.
  4. With ignition ON, monitor IMU live data/messages. If no data, measure supply voltage and ground at the sensor connector. If supply/ground missing/incorrect, trace to fuse/relay/ground point.
  5. Measure CAN H/L voltages at the sensor connector (or comms pins). Verify approx. 2.5 V idle and that bus toggles when modules communicate. If bus inactive at sensor but active elsewhere, inspect wiring to sensor for open/short.
  6. Check continuity/resistance of wiring between sensor and main harness/controller. Repair any opens/shorts; check for chafed wires or pin corrosion.
  7. If wiring and power/ground are good but no messages, attempt to communicate with the sensor using OEM tool functions (identify module). If tool cannot address sensor, suspect sensor or local module failure.
  8. If another identical known-good sensor is available, swap to confirm symptom disappearance before replacing. After replacement, perform any required sensor calibration or ECU programming as per OEM procedure.
  9. Clear codes and perform a road test or function test to verify repair. Re-scan for reoccurrence and confirm related systems operate normally.
  10. If fault persists after sensor/harness replacement and calibration, investigate controlling ECU/module and bus termination/software updates with OEM procedures.

Likely causes

  • Damaged or loose connector at the IMU
  • Broken or shorted wiring harness to the IMU
  • Failed IMU (internal electronics)
  • Loss of supply or ground to the IMU
  • CAN bus wiring fault or missing termination causing no messages

Fault status

⚠️ Status
No signal from gyrometer-accelerometer (IMU). Communication timeout or sensor not transmitting on vehicle network.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

U0100 U0121 U0140 U0155 U1000
Your experience will help others
+100 karma for a short comment :)
Keep it short and practical. Up to 500 characters.
Send to email

Report

Harassment or bullying behavior
Contains mature or sensitive content
Contains misleading or false information
Contains abusive or derogatory content
Contains spam, fake content or potential malware

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

  • See blocked member's posts
  • Mention this member in posts
  • Invite this member to groups
  • Message this member
  • Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .