Ignition Coil E (Primary/Secondary Circuit Malfunction)
There's a problem with the ignition coil circuit for cylinder E.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The ignition coil for cylinder E isn't functioning properly, which means the spark plug isn't getting the right power to ignite the fuel.
What the computer is actually seeing
The engine control module (ECM) detects a malfunction in the primary or secondary circuit of the ignition coil E due to abnormal voltage levels or misfires.
What a healthy reading looks like
Primary circuit resistance: 0.5 - 2.0 ohms; Secondary circuit voltage: 10 - 30 kV during crank.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check the wiring and connector for ignition coil E for damage, corrosion, or loose connections. Repair as necessary. Decision: Are the connections good? If yes, continue; if no, repair or replace the connector and retest.
- 22. Measure the resistance of the primary circuit of the ignition coil E. Expected value is between 0.5 - 2.0 ohms. Decision: Is the resistance in range? If yes, continue; if no, replace the ignition coil and retest.
- 33. Check the voltage at the ignition coil connector while cranking. Expected secondary circuit voltage is 10 - 30 kV. Decision: Is the voltage in range? If yes, continue; if no, check wiring to the ECM or ECM function.
- 44. Inspect spark plug for proper gap and condition. Decision: Is the spark plug in good condition with proper gap? If yes, further diagnostics on ECM; if no, replace spark plug and retest.
Common causes
- Faulty ignition coil E
- Wiring issues or corrosion in the connector
- Open or short in the ignition coil circuit
- Faulty ECM
- Incorrect spark plug gap
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with P0355?
It's not recommended to drive with this code as it can lead to engine misfires and reduced performance.
Will this code come back after clearing it?
If the underlying issue isn't fixed, the code will return after clearing.
Why does this code appear with P0350 or P0351?
These codes may also indicate other ignition coil circuit issues, often pointing to common wiring or ECU problems.
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