What Does U1059 Mean?
Another instance of missing or invalid PRNDL transmission data on the SCP network, typically stored by a different receiving module than U1058. This confirms widespread loss of transmission position communication.
Common Causes
40%
Complete loss of TCM/PCM communication on network
30%
Transmission range sensor failure or misadjustment
15%
SCP network circuit fault affecting multiple modules
10%
Intermittent TCM power loss during operation
5%
Transmission internal mechanical failure affecting range sensor
Diagnostic Steps
1
Step 1: Verify U1058 and U1059 are present together, indicating system-wide PRNDL data loss
2
Step 2: Check transmission range sensor voltage signals at TCM connector with key on
3
Step 3: Monitor freeze frame data to determine vehicle conditions when codes set
4
Step 4: Test for intermittent connections by wiggling harnesses while monitoring live data
5
Step 5: Verify proper adjustment of transmission range sensor per factory specifications
6
Step 6: If sensor and wiring test good, suspect TCM internal failure or programming issue
Estimated Repair Cost
$150 - $1,000
Parts + labor, varies by vehicle and location
Another instance of missing or invalid PRNDL transmission data on the SCP network, typically stored by a different receiving module than U1058. This confirms widespread loss of transmission position communication.
The most common cause of U1059 (SCP (J1850) Invalid or Missing Data for Transmission / Transaxle / PRNDL) is: Complete loss of TCM/PCM communication on network
Typical repair costs for U1059 range from $150 to $1,000, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission may not shift properly, vehicle may not start, or backup lights may not function. Should be repaired promptly to ensure safe operation.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U1059 to identify the root cause.
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Quick Info
Category
Network
System
Transmission Control / Vehicle Communication Network
Difficulty
Type
Manufacturer
Recommended Tools
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