P1293 High Side Open Bank No 1

• OBD2 Code: P1293
• Description: High Side Open Bank No 1
• Definition: This code indicates that there is an open circuit condition in the high side of the fuel injector bank number 1. It means that the power supply to one or more injectors on this bank is interrupted, which can lead to engine performance issues.

p1293 – High side open bank no 1

Typical severity: Severe

Common Causes

P1293 – High Side Open Bank No. 1

Common Causes:

• Faulty high-pressure fuel pump
• Clogged fuel filter
• Fuel pressure sensor malfunction
• Wiring or connector issues in the fuel system
• ECU (Engine Control Unit) failure

 

Common Misdiagnosis

OBD2 Code: P1293

Description: High Side Open Bank No. 1

Common Misdiagnosis: Faulty fuel injector or wiring issues are often misdiagnosed as a high side open circuit problem.

 

Common Diagnostic Steps

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OBD2 Code: P1293

Description: High Side Open Bank No. 1

• Check the vehicle’s battery voltage and ensure it is within the specified range.
• Inspect the wiring and connectors related to Bank No. 1 for any signs of damage, corrosion, or disconnection.
• Use a multimeter to test the continuity of the circuit associated with Bank No. 1 high side driver.
• Examine the fuel injectors on Bank No. 1 for proper operation and resistance values.
• Verify that there are no blown fuses related to the engine control module (ECM) or powertrain control module (PCM).
• If applicable, check for any technical service bulletins (TSBs) related to this code for your specific vehicle model.
• If all checks pass, consider testing or replacing the ECM/PCM as a last resort after ruling out other potential issues.