Toggle Side Panel

Shopping Cart

No products in the basket.

Shopping Cart

No products in the basket.

Close search
Home / DTC / P1294 — Top side of injector open - bank 2

P1294 — Top side of injector open - bank 2

Detailed page for trouble code P1294.

34,660codes
59brands
11,925generic
22,735specific
All codes P-codes (Powertrain) B-codes (Body) C-codes (Chassis) U-codes (Network/User) Tesla Alerts
Reset
Code

P1294

LAND ROVER P — Powertrain

Top side of injector open - bank 2

Brand: LAND ROVER
Type: P — Powertrain
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or high-resistance wiring on the injector supply circuit (top side)
  • Corroded, damaged, or disconnected injector connector(s)
  • Blown fuse or failed power/ignition relay supplying injector bank
  • Faulty injector(s) with open coil
  • Faulty PCM/ECM driver or internal fault
  • Aftermarket work or rodent damage to harness

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine misfire or rough idle affecting cylinders on bank 2
  • Hard start or no-start condition
  • Reduced engine power, hesitation, poor drivability
  • Stored injector-related DTCs (cylinder-specific or bank-specific)

What to check

  • Read and record freeze-frame and all stored DTCs; check related misfire codes (P03xx) and injector codes (P020x)
  • Visual inspection of injector connectors, wiring harness, and protective looms on bank 2 for damage, corrosion, or disconnection
  • Check relevant fuses and ignition/injector relays for proper operation
  • Measure voltage at the top (supply) pin of injector connector(s) with ignition ON (key ON, engine OFF)
  • Measure injector coil resistance with connector disconnected and compare to specification
  • Check continuity from injector supply pin back to the fuse/relay and to battery positive

Signal parameters

  • Top-side (supply) voltage at injector connector (ignition ON): battery voltage ~12–14 V (must be steady)
  • Injector coil resistance (typical gasoline injectors): generally ~1–20 ohms (refer to OEM spec for exact value)
  • During injection, bottom-side driver shows pulsed switching to ground; supply side should remain at B+ except for slight switching in some systems
  • Open-circuit condition: top-side voltage absent or intermittent; continuity to battery/fuse is infinite or high
  • If ECM drives top-side (less common): expect pulsed supply; consult OEM wiring before assuming constant B+

Diagnostic algorithm

  1. Scan vehicle, note P1294 and any related codes (P1293, P020x, P03xx). Record freeze-frame data (engine rpm, voltage, temperature).
  2. Visually inspect wiring, connectors and harness to bank 2 injectors for damage, corrosion, or separation. Repair obvious damage.
  3. With ignition ON (engine OFF) measure voltage at the top pin of each injector connector on bank 2. Expected: battery voltage (~12–14 V). If voltage is present at some injectors and not others, suspect wiring/connector to the affected injector(s).
  4. Check fuse(s) and relay(s) that supply the injector rail(s). Replace faulty fuses/relays as required and re-test voltage at injector top pin.
  5. With injector connector disconnected, measure injector coil resistance using an ohmmeter and compare to OEM spec. An open coil indicates a failed injector that should be replaced.
  6. Check continuity from the injector supply pin back to the fuse/relay and battery positive. Repair any open or high-resistance wiring or poor pin contact.
  7. If supply voltage and wiring check OK but fault persists, use a scope or DVOM to observe injector drive signal during cranking/running. Confirm ECM is commanding injectors (bottom-side switching) and that supply side remains stable.
  8. Swap a suspected bad injector with a known-good injector on the same bank (if serviceable) and see if the code follows the injector (helps distinguish harness vs injector failure).
  9. If wiring and injectors test good but the circuit still reads open, suspect PCM/ECM fault — confirm with manufacturer diagnostic procedures before ECM replacement.
  10. After repairs, clear codes, perform functional test and road test; re-scan to verify the code does not return.

Likely causes

  • Loose or corroded connector pin at injector(s) on bank 2
  • Open feed from fuse/relay to injector rail for bank 2
  • Broken wiring harness (chafed, pulled apart) between fuse/relay and injectors
  • Single failed injector coil (open) on bank 2
  • PCM power driver fault (less common)

Fault status

⚠️ Status
Top side (supply) of fuel injector circuit open — bank 2. ECM detects loss of expected supply voltage to injector(s) on bank 2; check wiring, connectors, fuses/relays and injectors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

P1293 P0200 P0202 P0300 P0302
413

Browse 413 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 .