OBD Guide
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P1294

High Side Open Bank No. 2

P1294 is an OBD-II diagnostic trouble code meaning: High Side Open Bank No. 2. Common causes: broken or damaged wiring, faulty relay or fuse. Estimated repair cost: $6–56.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$6–56 (est.)

Symptoms

  • Unstable engine operation
  • Power Loss
  • Increased fuel consumption
  • Check Engine light comes on
  • The engine may stall

Causes

  • Broken or damaged wiring
  • Faulty relay or fuse
  • Problems with the engine control unit
  • Contact corrosion
  • Malfunction of fuel injectors

How to Fix

  1. Check the integrity of wiring and contacts
  2. Check relays and fuses
  3. Diagnose the engine control unit
  4. Replace damaged components
  5. Clean contacts from corrosion

Related codes

P1293P1295P1296

Error P1294 by Vehicle Brand

DodgeFordJeepLincolnMercuryMitsubishiPlymouthPontiac

FAQ

What does the P1294 code mean?

P1294 is an OBD-II diagnostic trouble code that indicates: High Side Open Bank No. 2

What causes a P1294 error code?

The most common causes of P1294 include: Broken or damaged wiring; Faulty relay or fuse; Problems with the engine control unit; Contact corrosion.

How do I fix a P1294 diagnostic trouble code?

To fix P1294: Check the integrity of wiring and contacts. Check relays and fuses. Diagnose the engine control unit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1294?

Do not drive — repair immediately

How much does it cost to fix P1294?

The estimated repair cost for P1294 is $6–56. Actual cost depends on your vehicle, location, and labor rates.

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