U1402 Chrysler Code - Implausible Engine Temperature Signal Received
Quick Answer
The Diagnostic Trouble Code (DTC) sets when the Transmission Control Module (TCM) receives a Signal Not Available (SNA) message from the Powertrain Control Module (PCM) or an incorrect Controller Area Network (CAN) message from the PCM. Common causes include Check for Powertrain Control Module (PCM) codes, Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- U1402 Chrysler indicates Implausible Engine Temperature Signal Received.
- Common causes
- Common causes include Check for Powertrain Control Module (PCM) codes, Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code U1402 Chrysler Description
What are the Possible Causes of the DTC U1402 Chrysler?
- Check for Powertrain Control Module (PCM) codes
- Faulty Transmission Control Module (TCM)
- Transmission Control Module (TCM) harness is open or shorted
- Transmission Control Module (TCM) circuit poor electrical connection
How to Fix the DTC U1402 Chrysler?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U1402 Chrysler code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about U1402 Chrysler Code
1. What are the common symptoms of an U1402 Chrysler trouble code?
- Common symptoms include erratic engine temperature readings on the dashboard, overheating warning lights, and potential engine performance issues.
2. What could cause the U1402 code to trigger in a Chrysler vehicle?
- The U1402 code typically triggers when the Engine Control Module (ECM) receives an implausible signal related to engine temperature from the sensors.
3. How serious is the U1402 code in a Chrysler vehicle?
- The U1402 code should be addressed promptly to prevent potential engine overheating and damage due to inaccurate temperature readings.
4. Can a faulty engine coolant temperature sensor cause the U1402 code?
- Yes, a malfunctioning engine coolant temperature sensor is a common cause of the U1402 code as it can send incorrect signals to the ECM.
5. What are some DIY repair tips for fixing the U1402 code in a Chrysler vehicle?
- DIY repair tips include checking and potentially replacing the engine coolant temperature sensor, ensuring proper wiring connections, and resetting the code after the repair.
6. Is it safe to continue driving with the U1402 code present in a Chrysler car?
- It is not recommended to drive with the U1402 code as it can lead to inaccurate engine temperature readings and potential overheating issues.
7. How can a mechanic diagnose the U1402 code in a Chrysler vehicle?
- A mechanic can use a diagnostic scanner to read the code, inspect the engine coolant temperature sensor, check the wiring for any faults, and perform a thorough system test.
8. Can extreme weather conditions trigger the U1402 code in a Chrysler car?
- Yes, extreme weather conditions such as very high or very low temperatures can sometimes cause erratic readings and trigger the U1402 code.
9. Are there any recalls related to the U1402 code in Chrysler vehicles?
- It is advisable to check with the manufacturer or authorized service centers for any recalls or known issues related to the U1402 code in Chrysler vehicles.
10. How much does it typically cost to repair the U1402 code in a Chrysler vehicle?
- The cost of repairing the U1402 code can vary depending on the exact cause of the issue, but it may involve sensor replacement, wiring repairs, or ECM reprogramming, with costs ranging from $100 to $500 or more.
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