Manufacturer-specific body code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information
The B1342 code means the vehicle's onboard diagnostic system has detected: Manufacturer-specific body code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information. This is a serious severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- advanced
- Estimated cost
- Varies — depends on the specific component this manufacturer-specific code points to on your vehicle. Diagnose before buying parts.
Manufacturer-specific code. B1342 is a manufacturer-specific DTC, so its exact definition can differ by make, model, and year. Use the meaning above as a general guide, and always confirm it against your vehicle manufacturer's official service information (or a make-specific scan tool) before diagnosing or replacing parts.
Basic scanners skip body codes entirely. BlueDriver reads airbag, HVAC, lighting, and BCM codes through your phone.
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Common Symptoms
- Check Engine or a related warning light on
- Exact symptoms depend on the specific system this code covers for your make
- A make-specific scan reveals which subsystem and circuit is involved
Probable Causes (Ranked by Likelihood)
- A fault in the specific component or circuit this code monitors (the exact part varies by manufacturer) High
- Damaged wiring, a corroded connector, or a poor ground in that circuit Moderate
- A related sensor or control module reporting or causing the fault Moderate
Step-by-Step Diagnostic Procedure
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Confirm your exact make, model, and year first — B1342 is manufacturer-specific and can mean different things across brands.
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Read B1342 with an enhanced/make-specific scan tool and check your manufacturer's official service information for the precise definition and procedure.
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Inspect the wiring, connectors, and grounds for the indicated circuit before replacing any part.
Common Fixes by Vehicle
What techs usually find when diagnosing B1342 on specific vehicles — tap your vehicle for the fix and the exact part:
2005-2018 Ford F-150/F-250 moderate (diagnosis), hard (PCM swap) DIY
B1342 indicates a PCM internal fault on Ford trucks. Before replacing the PCM, check the PCM power and ground circuits. The PCM fuse in the battery junction box corrodes and causes intermittent B1342. Also inspect the PCM harness connector pins for pushed-back or corroded pins. If the PCM truly needs replacement, it must be programmed with Ford IDS or equivalent with the vehicle VIN.
Labor: 30 min (diagnosis), 2-3 hours (PCM replacement)2008-2019 Ford Escape/Focus/Fusion easy DIY
On Ford sedans, B1342 is frequently caused by low battery voltage during cranking. The PCM logs a fault whenever voltage drops below threshold. Load-test the battery and check the alternator output (should be 13.8-14.4V at idle). Replace the battery if it fails the load test. Clear codes and monitor -- if B1342 does not return with a good battery, the PCM is fine.
Labor: 15-30 min2005-2016 Ford Mustang easy DIY
Mustang PCM faults are often triggered by aftermarket tuning. If the car has been tuned, flash back to stock calibration and clear codes. On unmodified Mustangs, check the PCM connector (C175) for water intrusion -- the windshield cowl drain can overflow directly onto the PCM on 2005-2014 models. Dry the connector, clean pins with contact cleaner, and reseal the cowl drain.
Labor: 30 min - 1 hourFrequently Asked Questions
Does B1342 mean the same thing on every vehicle?
No. B1342 is a manufacturer-specific diagnostic trouble code, so its exact meaning varies by make, model, and year. Always confirm it against your vehicle manufacturer's service information before diagnosing or replacing parts.
What does B1342 most likely indicate?
Manufacturer-specific body code — definition not reliably documented; its meaning varies by make, model, and year, so confirm it against your manufacturer's service information. Treat this as a general guide and verify the specifics for your vehicle.
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