P0803
P0803: Transmission Control Module (TCM) Range/Performance Issue
📖 What Does P0803 Mean?
Symptoms
- • Transmission hesitation
- • slipping
- • or difficulty shifting gears
- • unusual noises
- • or the transmission warning light on the dashboard.
Common Causes
- • Faulty transmission solenoids
- • clogged transmission filter
- • low transmission fluid level
- • worn or damaged transmission components
- • or a faulty TCM.
Possible Solutions
1. Check transmission fluid level and condition. 2. Scan for any other trouble codes. 3. Test transmission solenoids. 4. Replace faulty solenoids or transmission components. 5. Update TCM software if necessary.
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❓ Common Questions About P0803
Can I drive with code P0803?
You can drive for a short time, but should address code P0803 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix P0803?
The estimated repair cost for code P0803 is between $200 and $1000. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
Required Parts
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View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with P0803
P0801: Transmission Control Module (TCM) Performance Problem
P0802: Transmission Control Module (TCM) Range/Performance Problem
P0804: Transmission Control Module (TCM) Range/Performance Problem
P0805: Transmission Control Module (TCM) Range/Performance Problem
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system