P1293
FordInjector High Side Open - Bank 1
The engine computer has detected an open electrical condition in the high-side injector circuit for Bank 1. The circuit controls fuel injector operation, so an open may prevent one or more injectors on that bank from operating correctly. This code identifies a circuit condition; it does not prove that an injector needs replacement.
⚠️ Before You Begin (Safety First)
If the engine is running very rough, losing power, or the check-engine light is flashing, stop driving when safe and arrange diagnosis. A sustained misfire can damage the catalytic converter. If you smell fuel or see a leak, shut the engine off and do not restart it until the leak is checked.
Common Symptoms
- The check-engine light may be on, with no obvious change in how the vehicle runs.
- A misfire or rough running may occur if an affected injector is not operating correctly.
- Reduced power or hesitation may occur, depending on how many injectors are affected and engine operating conditions.
- Starting may be difficult, or the engine may fail to run, if the circuit fault prevents enough fuel from being delivered.
- Fuel economy or emissions may worsen if the fault causes incomplete combustion.
Common Causes
- An open, damaged, or poor connection in the Bank 1 injector high-side wiring or connector.
- An injector electrical fault that creates an open circuit.
- A problem in the circuit's control or supply path.
- A control-module or related circuit fault, which should be considered only after wiring and injector checks.
Diagnostic Steps
- Confirm the code and note any other stored codes or symptoms; related codes can help narrow the affected circuit.
- With the engine off, visually inspect accessible Bank 1 injector connectors and wiring for damage, loose connections, corrosion, or signs of rubbing.
- Use vehicle-specific service information to identify Bank 1 and the relevant circuit; do not guess based on cylinder location.
- Avoid probing or disconnecting injector circuits with the engine running. If electrical testing is needed, follow the correct vehicle-specific procedure or have a technician perform it.
- If the engine misfires severely, the check-engine light flashes, or fuel is leaking, stop driving and arrange professional diagnosis.
When to Call a Professional
Use the vehicle-specific wiring information to identify the Bank 1 injector high-side circuit. Check related codes and scan data, then inspect and electrically test the circuit, connectors, injector(s), and control side as applicable. Locate the open before replacing parts; do not condemn an injector or engine computer based on this code alone.
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Commonly Asked Questions
Does P1293 mean the Bank 1 injector must be replaced?
No. It indicates an open condition in the Bank 1 injector high-side circuit. Wiring, connectors, the injector, or the circuit's control path may be involved.
Can the vehicle be driven with this code?
That depends on how it runs. If it runs normally, arrange diagnosis soon. Stop driving if it has a severe misfire, major power loss, a flashing check-engine light, or a fuel leak.
Does Bank 1 identify a specific cylinder?
No. The code names a bank, not an individual cylinder. The vehicle's engine layout and service information are needed to identify the applicable circuit.
Can a loose or damaged wire cause P1293?
Yes. An open or poor connection in the injector circuit can trigger this condition, so inspect and test the wiring before replacing components.
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