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2004 Ford F-150 P1289, P0353, P0355: Diagnosis and Troubleshooting Guide

Model: Ford F-150 Fault Code: P0353 Posted: 2016-01-09 11:51

Hi everyone, I'm new to this forum and hoping to get some clear guidance on my 2004 Ford F-150. My check engine light came on, so I used a Cen-Tech OBD2 scanner to retrieve the following diagnostic trouble codes: 1. P1289 - Cylinder Head Temperature (CHT) Sensor Circuit High Input - Reported value: $07E8 (Ford specification) 2. P0353 - Ignition Coil C Primary/Secondary Circuit Fault 3. P0355 - Ignition Coil E Primary/Secondary Circuit Fault I believe the P0353 and P0355 codes indicate issues with two ignition coil packs (cylinders C and E), likely due to faulty connectors or damaged wiring—especially in the first inch of the electrical connection, where such failures are common. However, I'm less certain about the P1289 code. Could someone please provide more detailed troubleshooting steps for this code? Specifically: - How to check the CHT sensor connector (ensure it's tight, free from corrosion) - How to perform a wiggle test while monitoring voltage at the sensor - Possible causes such as an open circuit in the wiring harness or at the connector - Whether a failed thermostat or low coolant level could be contributing factors I’ve noticed that my temperature gauge isn’t working, but the engine is not overheating. Does this point more toward a faulty thermostat or a sensor issue? I plan to inspect all suggested components tomorrow if weather permits. Any additional insights would be greatly appreciated!

Related fault codes
P0353P0355P1289
Comments (4)
Anonymous 2016-01-09 12:41

You didn't specify the engine type—5.4L is likely, but confirm that. For P035x codes (like P0353 and P0355), inspect the ignition coil-on-plug (COP) assemblies. Common failures include damaged wiring within the first inch of the connector, poor electrical contact, or a broken lock clip. Replacement connectors are available and often resolve these issues. For P1289—possible causes: - Check the CHT sensor connector for tightness and corrosion; perform a wiggle test while monitoring voltage output. - Open circuit in the wiring harness or at the harness connector. - A failed CHT sensor. - Low engine coolant level or a malfunctioning thermostat. Ensure these are ruled out before proceeding with further diagnostics.

Anonymous 2016-01-09 16:06

Thanks for the response, Kev2! After posting, I noticed my temperature gauge isn’t working—but the truck isn't overheating. Does this point more toward a thermostat failure or a sensor issue? I’ll check all your suggestions tomorrow if weather permits. Your input is very helpful and may save me time on troubleshooting.

Anonymous 2016-01-09 16:55

As mentioned, inspect the wiring harness for the CHT sensor—some access points can be challenging to reach. Are these the only codes appearing in your scan? If so, focus on those two ignition coils and the CHT sensor circuit.

Anonymous 2016-01-10 10:41

Thanks again, Kev2! Appreciate the detailed help.