Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / U0293 — Lost communication with the hybrid powertrain control module

U0293 — Lost communication with the hybrid powertrain control module

Detailed page for trouble code U0293.

34,236codes
59brands
11,745generic
22,491specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

U0293

LAND ROVER U — Network/User

Lost communication with the hybrid powertrain control module

Brand: LAND ROVER
Type: U — Network/User
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or short in CAN/data wiring between modules
  • Loss of power or ground to the hybrid powertrain control module
  • Connector corrosion, water ingress or pin damage at the module
  • Failed hybrid powertrain control module (internal fault)
  • Failed termination or wrong CAN bus impedance
  • Blown fuse or faulty relay supplying the module

Symptoms

  • Hybrid system warning lamp or MIL illuminated
  • Reduced engine/hybrid power or limp-home mode
  • Loss of hybrid functions (no EV mode, no regenerative braking)
  • Inability to start or frequent start/stop faults
  • Other modules reporting related communication faults or missing module in scan tool
  • Charging system or battery warnings

What to check

  • Use an OEM-capable scan tool to verify U0293, check freeze frame and related codes, and confirm whether the HPPCM is listed on the network
  • Verify 12V battery state-of-charge and health before diagnosing communications
  • Check relevant fuses and relays for the hybrid module supply and replace if blown
  • Visually inspect the hybrid module connector, harness routing and ground points for damage, corrosion or water ingress
  • Using a DVM/voltmeter, verify module power (battery/ignition feed) and ground pins have correct voltages/continuity (do not probe HV connectors)
  • Check CAN bus continuity and termination between nodes; measure resistance across CAN_H and CAN_L (expected approx. 60 ohms across network)

Signal parameters

  • Module 12V supply present with ignition/key on (battery voltage level)
  • CAN bus differential amplitude typically around 1.5–3.0 V when active (use oscilloscope for exact measurement)
  • Network termination resistance ≈60 ohms measured between CAN_H and CAN_L (two 120Ω in parallel)
  • Module heartbeat/diagnostic message typically repeats every 100–1000 ms (1–10 Hz) — varies by manufacturer/module
  • CAN bus error counters increment when a node is failing to transmit/receive

Diagnostic algorithm

  1. Record all active and historic DTCs and freeze-frame data using an OEM scan tool; note related communication codes.
  2. Attempt a key cycle (power off/on) and re-scan to see if the module reappears or code clears temporarily.
  3. Verify 12V battery voltage and health; charge or replace if low (communication modules may not wake with low 12V).
  4. Check and replace any blown fuses/relays supplying the hybrid powertrain control module.
  5. Visually inspect the HPPCM connector and harness for corrosion, bent pins, water ingress, chafing or damaged insulation; repair as needed.
  6. With ignition on, measure power and ground at the HPPCM connector pins for correct voltage/continuity (follow vehicle wiring diagram).
  7. Check CAN bus presence: use scan tool to see if HPPCM appears on network; if not present, use oscilloscope to look for CAN waveform at module connector and at other nodes.
  8. Measure termination resistance across CAN_H and CAN_L at a known-good location; open or shorted termination suggests wiring or node issue.
  9. Isolate the fault by disconnecting harness branches or modules (one at a time) to see if bus behavior changes or module appears; document changes.
  10. Inspect common damage locations (engine bay harness, battery area, suspension/steering/door hinges) and repair wiring or connector faults.
  11. If wiring and power/grounds pass, follow OEM procedure to reflash, re-initialize or replace the HPPCM. Ensure correct software/calibration is installed.
  12. After repair, clear codes, perform key cycles and a road test to confirm proper communication and that U0293 does not return. Re-check for related DTCs.

Likely causes

  • Damaged/abraded CAN wires in harness (common at doors/hinges/engine bay routing)
  • Loose or corroded ground or power pin at the hybrid module connector
  • Blown fuse supplying HPPCM control or bus wake power
  • Water intrusion into the module connector causing intermittent/no communication
  • HPPCM internal failure after a crash or electrical event
  • Module asleep due to HV interlock open or low 12V system voltage during cranking

Fault status

⚠️ Status
Lost communication with the hybrid powertrain control module — no or intermittent CAN messages received from HPPCM.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-4.0 hours

Similar codes

U0100 U0101 U0121 U0142 U1000 U0294
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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 .